BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-35189High confidence

Excessive Memory Allocation in Relative CRLDP Processing

OpenSSL · OpenSSL

5.3MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.27% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs OpenSSL OpenSSL and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

7 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 2 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.21v3.21 · mainopensslVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.3.3.7-r2Alpine Security Database ↗Source updated 6 Oct 2026
Debian trixietrixie · sourceopensslVendor fix publishedDebian records a fixed source-package version for this release.3.5.7-1~deb13u3Debian Security Tracker ↗Source updated 7 Oct 2026
Debian bookwormbookworm · sourceopensslAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 7 Oct 2026
Debian forkyforky · sourceopensslAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 7 Oct 2026
Debian sidsid · sourceopensslVendor fix publishedDebian records a fixed source-package version for this release.3.6.5-1Debian Security Tracker ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveedk2Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopensslVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.3.0.13-0ubuntu3.16Canonical Ubuntu Security ↗Source updated 7 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current
CVE-2026-35189 · CSAF 2.0 · revision 3 · interimSUSE Product Security TeamCVE-2026-35189
435 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • libopenssl-1_1-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • libopenssl1_1 as component of SUSE Linux Enterprise Desktop 15 SP7
  • libopenssl1_1-32bit as component of SUSE Linux Enterprise Desktop 15 SP7
  • openssl-1_1 as component of SUSE Linux Enterprise Desktop 15 SP7
  • libopenssl-1_0_0-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl-1_0_0-devel-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl-1_1-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl-1_1-devel-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl1_0_0 as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl1_0_0-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl1_0_0-hmac as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libopenssl1_0_0-hmac-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP5
Summary
Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-35189 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityopenssl: openssl: Denial of Service via excessive memory allocation in CRL distribution point processing
86 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub
  • edk2-aarch64 as a component of Red Hat Enterprise Linux 10
  • edk2-ovmf as a component of Red Hat Enterprise Linux 10
  • edk2-tools as a component of Red Hat Enterprise Linux 10
  • edk2-tools-doc as a component of Red Hat Enterprise Linux 10
  • edk2.src as a component of Red Hat Enterprise Linux 10
  • mokutil as a component of Red Hat Enterprise Linux 10
  • openssl as a component of Red Hat Enterprise Linux 10
  • openssl-devel as a component of Red Hat Enterprise Linux 10
  • openssl-libs as a component of Red Hat Enterprise Linux 10
  • openssl-perl as a component of Red Hat Enterprise Linux 10
  • openssl.src as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in OpenSSL. A remote attacker can cause a Denial of Service (DoS) by presenting a specially crafted certificate during a Transport Layer Security (TLS) handshake. When OpenSSL processes and caches certificate extensions containing numerous Certificate Revocation List (CRL) distribution points, it allocates an excessive amount of memory. This disproportionate memory usage can exhaust system resources and crash the affected client or server application.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-89001

No EUVD known-exploited evidence

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
5.3 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.

What

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Allocation of Resources Without Limits or Throttling → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-770 ↗

CWE-770: Allocation of Resources Without Limits or Throttling. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-770
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-89001Official EUVD mapping

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of Service in clients or in servers that solicit client certificates. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: A certificate or a set of certificates that fits under the limit for size of certificates accepted from the peer (~100 KiB) can result in allocation of several hundred MiB of resident memory on the receiving side during a normal TLS handshake. This may be enough to crash the client or server, if multiple concurrent connections lead to similarly large memory allocations. The fix postpones processing of the CRL distribution points extensions in certificates to the time when the processed value is required for CRL processing. This avoids keeping large memory allocations for a long time when such certificates are received. FIPS impact: no The affected code is outside the FIPS module boundary.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3638OpenSSL: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren und einen Denial-of-Service-Zustand zu verursachen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1241Multiples vulnérabilités dans OpenSSL

De multiples vulnérabilités ont été découvertes dans OpenSSL. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 29 Sept 2026 · Last source change 30 Sept 2026, 20:11 UTC · CWE-770 · Allocation of Resources Without Limits or Throttling

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-30
European sourceENISA EUVD · EUVD-2026-89001
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceCNA
NVD statusNVD awaiting enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    OpenSSL: 4.0.0 < 4.0.3, 3.6.0 < 3.6.5, 3.5.0 < 3.5.9, 3.4.0 < 3.4.8, 3.0.0 < 3.0.23, 1.1.1 < 1.1.1zj, 1.0.2 < 1.0.2zs · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    OpenSSL: 4.0.0 < 4.0.3, 3.6.0 < 3.6.5, 3.5.0 < 3.5.9, 3.4.0 < 3.4.8, 3.0.0 < 3.0.23, 1.1.1 < 1.1.1zj, 1.0.2 < 1.0.2zs · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    Red Hat Product Security ↗
  2. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-35189 to remediation: access.redhat.com/CVE-2026-35189.
    Before
    remediation: access.redhat.com/CVE-2026-35189
    After
    remediation: access.redhat.com/CVE-2026-35189
    Red Hat Product Security ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; edk2-aarch64 as a component of Red Hat Enterprise Linux 10; edk2-ovmf as a component of Red Hat Enterprise Linux 10; edk2-tools as a component of Red Hat Enterprise Linux 10; edk2-tools-doc as a component of Red Hat Enterprise Linux 10; edk2.src as a component of Red Hat Enterprise Linux 10; mokutil as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 10; openssl-devel as a component of Red Hat Enterprise Linux 10; openssl-libs as a component of Red Hat Enterprise Linux 10; openssl-perl as a component of Red Hat Enterprise Linux 10; openssl.src as a component of Red Hat Enterprise Linux 10; shim-aa64 as a component of Red Hat Enterprise Linux 10; shim-unsigned-aarch64.src as a component of Red Hat Enterprise Linux 10; shim-unsigned-x64.src as a component of Red Hat Enterprise Linux 10; shim-x64 as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 6; openssl-devel as a component of Red Hat Enterprise Linux 6; openssl-perl as a component of Red Hat Enterprise Linux 6; openssl-static as a component of Red Hat Enterprise Linux 6; openssl.src as a component of Red Hat Enterprise Linux 6; AAVMF as a component of Red Hat Enterprise Linux 7; OVMF as a component of Red Hat Enterprise Linux 7; mokutil as a component of Red Hat Enterprise Linux 7; openssl as a component of Red Hat Enterprise Linux 7; openssl-devel as a component of Red Hat Enterprise Linux 7; openssl-libs as a component of Red Hat Enterprise Linux 7; openssl-perl as a component of Red Hat Enterprise Linux 7; openssl-static as a component of Red Hat Enterprise Linux 7; openssl.src as a component of Red Hat Enterprise Linux 7; and 58 more
    After
    rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; edk2-aarch64 as a component of Red Hat Enterprise Linux 10; edk2-ovmf as a component of Red Hat Enterprise Linux 10; edk2-tools as a component of Red Hat Enterprise Linux 10; edk2-tools-doc as a component of Red Hat Enterprise Linux 10; edk2.src as a component of Red Hat Enterprise Linux 10; mokutil as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 10; openssl-devel as a component of Red Hat Enterprise Linux 10; openssl-libs as a component of Red Hat Enterprise Linux 10; openssl-perl as a component of Red Hat Enterprise Linux 10; openssl.src as a component of Red Hat Enterprise Linux 10; shim-aa64 as a component of Red Hat Enterprise Linux 10; shim-unsigned-aarch64.src as a component of Red Hat Enterprise Linux 10; shim-unsigned-x64.src as a component of Red Hat Enterprise Linux 10; shim-x64 as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 6; openssl-devel as a component of Red Hat Enterprise Linux 6; openssl-perl as a component of Red Hat Enterprise Linux 6; openssl-static as a component of Red Hat Enterprise Linux 6; openssl.src as a component of Red Hat Enterprise Linux 6; AAVMF as a component of Red Hat Enterprise Linux 7; OVMF as a component of Red Hat Enterprise Linux 7; mokutil as a component of Red Hat Enterprise Linux 7; openssl as a component of Red Hat Enterprise Linux 7; openssl-devel as a component of Red Hat Enterprise Linux 7; openssl-libs as a component of Red Hat Enterprise Linux 7; openssl-perl as a component of Red Hat Enterprise Linux 7; openssl-static as a component of Red Hat Enterprise Linux 7; openssl.src as a component of Red Hat Enterprise Linux 7; and 56 more · Fixed: openssl-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-0:3.5.9-0.1.hum1@src as a component of Red Hat Hardened Images; openssl-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-config-fips-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-config-fips-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-devel-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-devel-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-devel-engine-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-devel-engine-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-fips-provider-upstream-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-fips-provider-upstream-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-libs-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-libs-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl-perl-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl-perl-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl3-0:3.5.9-0.1.hum1@src as a component of Red Hat Hardened Images; openssl3-devel-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl3-devel-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl3-devel-engine-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl3-devel-engine-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; openssl3-libs-0:3.5.9-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; openssl3-libs-0:3.5.9-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  5. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    CISA ADP ↗
  6. CVSS scoreCVSS score changed from not recorded to 5.3 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
    Before
    not recorded
    After
    5.3 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
    CISA ADP ↗
  7. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  8. ENISA EUVD mappingEUVD-2026-89001 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-89001"}
    ENISA EUVD ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; edk2-aarch64 as a component of Red Hat Enterprise Linux 10; edk2-ovmf as a component of Red Hat Enterprise Linux 10; edk2-tools as a component of Red Hat Enterprise Linux 10; edk2-tools-doc as a component of Red Hat Enterprise Linux 10; edk2.src as a component of Red Hat Enterprise Linux 10; mokutil as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 10; openssl-devel as a component of Red Hat Enterprise Linux 10; openssl-libs as a component of Red Hat Enterprise Linux 10; openssl-perl as a component of Red Hat Enterprise Linux 10; openssl.src as a component of Red Hat Enterprise Linux 10; shim-aa64 as a component of Red Hat Enterprise Linux 10; shim-unsigned-aarch64.src as a component of Red Hat Enterprise Linux 10; shim-unsigned-x64.src as a component of Red Hat Enterprise Linux 10; shim-x64 as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 6; openssl-devel as a component of Red Hat Enterprise Linux 6; openssl-perl as a component of Red Hat Enterprise Linux 6; openssl-static as a component of Red Hat Enterprise Linux 6; openssl.src as a component of Red Hat Enterprise Linux 6; AAVMF as a component of Red Hat Enterprise Linux 7; OVMF as a component of Red Hat Enterprise Linux 7; mokutil as a component of Red Hat Enterprise Linux 7; openssl as a component of Red Hat Enterprise Linux 7; openssl-devel as a component of Red Hat Enterprise Linux 7; openssl-libs as a component of Red Hat Enterprise Linux 7; openssl-perl as a component of Red Hat Enterprise Linux 7; openssl-static as a component of Red Hat Enterprise Linux 7; openssl.src as a component of Red Hat Enterprise Linux 7; and 59 more
    After
    rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; edk2-aarch64 as a component of Red Hat Enterprise Linux 10; edk2-ovmf as a component of Red Hat Enterprise Linux 10; edk2-tools as a component of Red Hat Enterprise Linux 10; edk2-tools-doc as a component of Red Hat Enterprise Linux 10; edk2.src as a component of Red Hat Enterprise Linux 10; mokutil as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 10; openssl-devel as a component of Red Hat Enterprise Linux 10; openssl-libs as a component of Red Hat Enterprise Linux 10; openssl-perl as a component of Red Hat Enterprise Linux 10; openssl.src as a component of Red Hat Enterprise Linux 10; shim-aa64 as a component of Red Hat Enterprise Linux 10; shim-unsigned-aarch64.src as a component of Red Hat Enterprise Linux 10; shim-unsigned-x64.src as a component of Red Hat Enterprise Linux 10; shim-x64 as a component of Red Hat Enterprise Linux 10; openssl as a component of Red Hat Enterprise Linux 6; openssl-devel as a component of Red Hat Enterprise Linux 6; openssl-perl as a component of Red Hat Enterprise Linux 6; openssl-static as a component of Red Hat Enterprise Linux 6; openssl.src as a component of Red Hat Enterprise Linux 6; AAVMF as a component of Red Hat Enterprise Linux 7; OVMF as a component of Red Hat Enterprise Linux 7; mokutil as a component of Red Hat Enterprise Linux 7; openssl as a component of Red Hat Enterprise Linux 7; openssl-devel as a component of Red Hat Enterprise Linux 7; openssl-libs as a component of Red Hat Enterprise Linux 7; openssl-perl as a component of Red Hat Enterprise Linux 7; openssl-static as a component of Red Hat Enterprise Linux 7; openssl.src as a component of Red Hat Enterprise Linux 7; and 58 more
    Red Hat Product Security ↗
  10. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-89001↗Vendor CSAF · SUSE Product Security Team↗Red Hat Product Security security advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-35189 · cve.blacktree.nl