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Full vulnerability report · 2026
CVE-2026-59997High confidence

OpenBSD OpenSSH — Improper Validation of Specified Quantity in Input

OpenBSD · OpenSSH

4.2MediumCVSS 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.
  • EPSS is 0.18% 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 OpenBSD OpenSSH 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

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

6 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
Debian trixietrixie · sourceopensshAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourceopensshAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:10.4p1-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:10.4p1-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopensshVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.1:9.6p1-3ubuntu13.18Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopenssh-ssh1Under 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.

1 current
CVE-2026-59997 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityopenssh: OpenSSH: SFTP security bypass due to command-line argument parsing flaw
42 known affected

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

  • openssh as a component of Red Hat Enterprise Linux 10
  • openssh-askpass as a component of Red Hat Enterprise Linux 10
  • openssh-clients as a component of Red Hat Enterprise Linux 10
  • openssh-keycat as a component of Red Hat Enterprise Linux 10
  • openssh-keysign as a component of Red Hat Enterprise Linux 10
  • openssh-server as a component of Red Hat Enterprise Linux 10
  • openssh.src as a component of Red Hat Enterprise Linux 10
  • openssh as a component of Red Hat Enterprise Linux 6
  • openssh-askpass as a component of Red Hat Enterprise Linux 6
  • openssh-clients as a component of Red Hat Enterprise Linux 6
  • openssh-ldap as a component of Red Hat Enterprise Linux 6
  • openssh-server as a component of Red Hat Enterprise Linux 6
Summary
A flaw was found in OpenSSH. The internal-sftp component within sshd incorrectly processes command-line arguments, recognizing only the first nine. This limitation can prevent the application of intended security configurations for SFTP (SSH File Transfer Protocol) connections, potentially leading to a bypass of security properties.
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-2026-42139

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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
Not supplied in the stored EUVD record
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

internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.

What

internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

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

What

internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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 → Improper Validation of Specified Quantity in Input → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
High: exploitation depends on specific conditions
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-1284 ↗

CWE-1284: Improper Validation of Specified Quantity in Input. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

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:H/PR:N/UI:R/S:U/C:L/I:L/A:N

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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: 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-1284
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-3038Meinberg LANTIME: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.

Official advisory ↗
BSI · German · WID-SEC-2026-2858IBM AIX und VIOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM AIX und IBM VIOS ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-2221OpenSSH: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1067Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-48962 Référence CVE CVE-2026-50560 https://www.cve.org/CVERecord?id=CVE-2026-50560 Référence CVE CVE-2026-50645 https://www.cve.org/CVERecord?id=CVE-2026-50645 Référence CVE CVE-2026-54225 https://www.cve.org/CVERecord?id=CVE-2026-54225 Référence CVE CVE-2026-57819 https://www.cve.org/CVERecord?id=CVE-2026-57819 Référence CVE CVE-2026-59879 https://www.cve.org/CVERecord?id=CVE-2026-59879 Référence CVE CVE-2026-59880 https://www.cve.org/CVERecord?id=CVE-2026-59880 Référence CVE CVE-2026-59995 https://www.cve.org/CVERecord?id=CVE-2026-59995 Référence CVE CVE-2026-59996 https://www.cve.org/CVERecord?id=CVE-2026-59996 Référence CVE CVE-2026-59997 https://www.cve.org/CVERecord?id=CVE-2026-59997 Référence CVE CVE-2026-59999 https://www.cve.org/CVERecord?id=CVE-2026-59999 Référence CVE CVE-2026-60000 https://www.cve.org/CVERecord?id=CVE-2026-60000 Référence CVE CVE-2026-60001 https://www.cve.org/CVERecord?id=CVE-2026-60001 Référence CVE CVE-2026-60002 https://www.cve.org/CVERecord?id=CVE-2026-60002 Référence CVE CVE-2026-60147 https://www.cve.org/CVERecord?id=CVE-2026-60147 Référence CVE CVE-2026-6472 https://www.cve.org/CVERecord?id=CVE-2026-6472 Référence CVE CVE-2026-6473 https://www.cve.org/CVERecord?id=CVE-2026-6473 Référence CVE CVE-2026-6474 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0873Multiples vulnérabilités dans Microsoft Azure Linux

de sécurité Microsoft Azure Linux CVE-2026-54886 du 07 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-54908 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-56000 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-56001 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-56002 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-56003 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-59995 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-59996 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-59997 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-59999 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-60000 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-60001 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-60002 du 09 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-14380 du 11 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-14461 du 11 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-14739 du 11 juillet 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-14740 du 11 juillet 2026 Bulletin de sé

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-023346OpenBSDのOpenSSHにおける入力で指定された数量の不適切な検証に関する脆弱性

OpenSSH 10.4より前のsshd内のinternal-sftpは、最初の9つのコマンドライン引数のみを認識します。これは、後のコマンドライン引数がSFTP接続の意図したセキュリティ特性を確保するのに役立つ場合があり、重要です。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0321Meerdere kwetsbaarheden verholpen in IBM AIX en IBM PowerVM VIOS

OpenSSH versions prior to 10.4 contain multiple vulnerabilities including internal-sftp's limitation to nine command-line arguments, improper file location constraints, undocumented GSSAPI behavior, and authentication bypasses, potentially leading to data disclosure, modification, or DoS.

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
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 8 Jul 2026 · Last source change 8 Jul 2026, 12:52 UTC · CWE-1284 · Improper Validation of Specified Quantity in Input

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 2026-08-14
European sourceENISA EUVD · EUVD-2026-42139
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

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
    openssh as a component of Red Hat Enterprise Linux 10; openssh-askpass as a component of Red Hat Enterprise Linux 10; openssh-clients as a component of Red Hat Enterprise Linux 10; openssh-keycat as a component of Red Hat Enterprise Linux 10; openssh-keysign as a component of Red Hat Enterprise Linux 10; openssh-server as a component of Red Hat Enterprise Linux 10; openssh.src as a component of Red Hat Enterprise Linux 10; openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openssh as a component of Red Hat Enterprise Linux 8; openssh-askpass as a component of Red Hat Enterprise Linux 8; openssh-cavs as a component of Red Hat Enterprise Linux 8; openssh-clients as a component of Red Hat Enterprise Linux 8; openssh-keycat as a component of Red Hat Enterprise Linux 8; openssh-ldap as a component of Red Hat Enterprise Linux 8; and 12 more · Fixed: openssh-main@aarch64 as a component of Red Hat Hardened Images; openssh-main@src as a component of Red Hat Hardened Images; openssh-main@x86_64 as a component of Red Hat Hardened Images
    After
    openssh as a component of Red Hat Enterprise Linux 10; openssh-askpass as a component of Red Hat Enterprise Linux 10; openssh-clients as a component of Red Hat Enterprise Linux 10; openssh-keycat as a component of Red Hat Enterprise Linux 10; openssh-keysign as a component of Red Hat Enterprise Linux 10; openssh-server as a component of Red Hat Enterprise Linux 10; openssh.src as a component of Red Hat Enterprise Linux 10; openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openssh as a component of Red Hat Enterprise Linux 8; openssh-askpass as a component of Red Hat Enterprise Linux 8; openssh-cavs as a component of Red Hat Enterprise Linux 8; openssh-clients as a component of Red Hat Enterprise Linux 8; openssh-keycat as a component of Red Hat Enterprise Linux 8; openssh-ldap as a component of Red Hat Enterprise Linux 8; and 12 more · Fixed: openssh-0:10.4p1-1.hum1@aarch64 as a component of Red Hat Hardened Images; openssh-0:10.4p1-1.hum1@src as a component of Red Hat Hardened Images; openssh-0:10.4p1-1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 10.4 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < 10.4 · 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 ↗
  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
    openssh as a component of Red Hat Enterprise Linux 10; openssh-askpass as a component of Red Hat Enterprise Linux 10; openssh-clients as a component of Red Hat Enterprise Linux 10; openssh-keycat as a component of Red Hat Enterprise Linux 10; openssh-keysign as a component of Red Hat Enterprise Linux 10; openssh-server as a component of Red Hat Enterprise Linux 10; openssh.src as a component of Red Hat Enterprise Linux 10; openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openssh as a component of Red Hat Enterprise Linux 8; openssh-askpass as a component of Red Hat Enterprise Linux 8; openssh-cavs as a component of Red Hat Enterprise Linux 8; openssh-clients as a component of Red Hat Enterprise Linux 8; openssh-keycat as a component of Red Hat Enterprise Linux 8; openssh-ldap as a component of Red Hat Enterprise Linux 8; and 11 more · Fixed: openssh-main@aarch64 as a component of Red Hat Hardened Images; openssh-main@src as a component of Red Hat Hardened Images; openssh-main@x86_64 as a component of Red Hat Hardened Images
    After
    openssh as a component of Red Hat Enterprise Linux 10; openssh-askpass as a component of Red Hat Enterprise Linux 10; openssh-clients as a component of Red Hat Enterprise Linux 10; openssh-keycat as a component of Red Hat Enterprise Linux 10; openssh-keysign as a component of Red Hat Enterprise Linux 10; openssh-server as a component of Red Hat Enterprise Linux 10; openssh.src as a component of Red Hat Enterprise Linux 10; openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openssh as a component of Red Hat Enterprise Linux 8; openssh-askpass as a component of Red Hat Enterprise Linux 8; openssh-cavs as a component of Red Hat Enterprise Linux 8; openssh-clients as a component of Red Hat Enterprise Linux 8; openssh-keycat as a component of Red Hat Enterprise Linux 8; openssh-ldap as a component of Red Hat Enterprise Linux 8; and 12 more · Fixed: openssh-main@aarch64 as a component of Red Hat Hardened Images; openssh-main@src as a component of Red Hat Hardened Images; openssh-main@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-42139↗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-2026-59997 · cve.blacktree.nl