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Full vulnerability report · 2026
CVE-2026-76641High confidence

Expat Out-of-Bounds Read via dtdCopy

libexpat · libexpat

8.7HighCVSS 4.0
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, 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 0.35% 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 libexpat libexpat 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: Within 30 daysRemediation target: Within 180 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.

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.

15 package states
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 v3.23v3.23 · mainexpatVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.2.8.4-r0Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.22v3.22 · mainexpatVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.2.8.4-r0Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.21v3.21 · mainexpatVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.2.8.4-r0Alpine Security Database ↗Source updated 3 Oct 2026
Debian trixietrixie · sourceexpatNot affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourceexpatNot affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourceexpatNot affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourceexpatNot affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appslibxmltokUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appsswish-eUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appsxmlrpc-cUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivecadaverUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveexpatVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.2.6.1-2ubuntu0.6Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivematanzaUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivetdomUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivewbxml2Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 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-2026-76641 · CSAF 2.0 · revision 5 · interimSUSE Product Security TeamCVE-2026-76641
163 known affected

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

  • expat as component of SUSE Linux Enterprise Desktop 15 SP7
  • libexpat-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • libexpat1 as component of SUSE Linux Enterprise Desktop 15 SP7
  • libexpat1-32bit as component of SUSE Linux Enterprise Desktop 15 SP7
  • expat as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libexpat-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libexpat1 as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • libexpat1-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • expat as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • libexpat-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • libexpat1 as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • libexpat1-32bit as component of SUSE Linux Enterprise High Performance Computing 15 SP1
Summary
Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-76641 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityexpat: Expat: Denial of Service via XML external entity parsing
44 known affected

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

  • expat as a component of Red Hat Enterprise Linux 10
  • expat-devel as a component of Red Hat Enterprise Linux 10
  • expat.src as a component of Red Hat Enterprise Linux 10
  • firefox as a component of Red Hat Enterprise Linux 10
  • firefox.src as a component of Red Hat Enterprise Linux 10
  • thunderbird as a component of Red Hat Enterprise Linux 10
  • thunderbird.src as a component of Red Hat Enterprise Linux 10
  • compat-expat1 as a component of Red Hat Enterprise Linux 6
  • compat-expat1.src as a component of Red Hat Enterprise Linux 6
  • expat as a component of Red Hat Enterprise Linux 6
  • expat-devel as a component of Red Hat Enterprise Linux 6
  • expat.src as a component of Red Hat Enterprise Linux 6
Summary
A flaw was found in Expat. Attackers can exploit an out-of-bounds read vulnerability by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. This can lead to memory corruption. Specifically, a mismatch in struct sizes can cause a read past memory boundaries, potentially resulting in a denial of service (DoS) due to a segfault or incorrect handling of XML attributes.
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-2026-63493

No EUVD known-exploited evidence

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

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
8.7 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

What

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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 → Out-of-bounds Read → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-125 ↗

CWE-125: Out-of-bounds Read. The product reads data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: 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.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
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.
NetworkUnauthenticatedCWE-125
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-63493Official EUVD mapping

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3642Meinberg LANTIME: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Denial-of-Service-Zustände herbeizuführen, sowie weitere, nicht näher spezifizierte Angriffe zu starten.

Official advisory ↗
BSI · German · WID-SEC-2026-2960expat: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in expat ausnutzen, um eine Speicherbeschädigung und einen Denial-of-Service-Zustand zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260826Security Bulletin 26 Aug 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 26 Aug 2026, published on 26 August 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CSIRT Italia · Italian · sanata-vulnerabilita-in-libexpat-1Sanata vulnerabilità in libexpat

Aggiornamenti di sicurezza sanano una vulnerabilità in libexpat, nota libreria scritta in C per l'analisi di documenti XML. Tale vulnerabilità, qualora sfruttata, consentirebbe ad utente malintenzionato di innescare la corruzione della memoria o il crash dell'applicazione, portando alla compromissione della disponibilità del servizio sulle istanze interessate.

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.
Patch available
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
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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 20 Aug 2026 · Last source change 1 Oct 2026, 15:21 UTC · CWE-125 · Out-of-bounds Read

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-23
European sourceENISA EUVD · EUVD-2026-63493
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. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/CVE-2026-76641.
    Before
    remediation: access.redhat.com/CVE-2026-76641
    After
    no authoritative guidance recorded
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    libexpat: ≤ 2.8.3 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    After
    libexpat: ≤ 2.8.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  3. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    CNA ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    libexpat: ≤ 2.8.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    libexpat: ≤ 2.8.3 · 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 ↗
  5. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: expat-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@src as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    After
    expat as a component of Red Hat Enterprise Linux 10; expat-devel as a component of Red Hat Enterprise Linux 10; expat.src as a component of Red Hat Enterprise Linux 10; firefox as a component of Red Hat Enterprise Linux 10; firefox.src as a component of Red Hat Enterprise Linux 10; thunderbird as a component of Red Hat Enterprise Linux 10; thunderbird.src as a component of Red Hat Enterprise Linux 10; compat-expat1 as a component of Red Hat Enterprise Linux 6; compat-expat1.src as a component of Red Hat Enterprise Linux 6; expat as a component of Red Hat Enterprise Linux 6; expat-devel as a component of Red Hat Enterprise Linux 6; expat.src as a component of Red Hat Enterprise Linux 6; expat as a component of Red Hat Enterprise Linux 7; expat-devel as a component of Red Hat Enterprise Linux 7; expat-static as a component of Red Hat Enterprise Linux 7; expat.src as a component of Red Hat Enterprise Linux 7; firefox as a component of Red Hat Enterprise Linux 7; firefox.src as a component of Red Hat Enterprise Linux 7; expat as a component of Red Hat Enterprise Linux 8; expat-devel as a component of Red Hat Enterprise Linux 8; expat.src as a component of Red Hat Enterprise Linux 8; firefox as a component of Red Hat Enterprise Linux 8; firefox.src as a component of Red Hat Enterprise Linux 8; mingw-expat.src as a component of Red Hat Enterprise Linux 8; mingw32-expat as a component of Red Hat Enterprise Linux 8; mingw64-expat as a component of Red Hat Enterprise Linux 8; thunderbird as a component of Red Hat Enterprise Linux 8; thunderbird.src as a component of Red Hat Enterprise Linux 8; xmlrpc-c as a component of Red Hat Enterprise Linux 8; xmlrpc-c-c++ as a component of Red Hat Enterprise Linux 8; and 14 more · Fixed: expat-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@src as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    ≤ 2.8.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    ≤ 2.8.3 · 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 ↗
  8. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-76641 to remediation: access.redhat.com/CVE-2026-76641.
    Before
    remediation: access.redhat.com/CVE-2026-76641
    After
    remediation: access.redhat.com/CVE-2026-76641
    Red Hat Product Security ↗
  9. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  10. Affected versionsThe structured affected or fixed version information changed.
    Before
    expat.src as a component of Red Hat Hardened Images
    After
    Fixed: expat-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@src as a component of Red Hat Hardened Images; expat-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-devel-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; expat-static-0:2.8.4-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  11. Affected versionsThe structured affected or fixed version information changed.
    Before
    libexpat: ≤ 2.8.3 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    After
    libexpat: ≤ 2.8.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  12. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/CVE-2026-76641.
    Before
    remediation: access.redhat.com/CVE-2026-76641
    After
    no authoritative guidance recorded
    CNA ↗
  13. Affected versionsThe structured affected or fixed version information changed.
    Before
    ≤ 2.8.3 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    After
    libexpat: ≤ 2.8.3 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  14. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    CNA ↗
  15. 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-2026-63493↗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-2026-76641 · cve.blacktree.nl