CVE-2025-26465: Detection of Error Condition Without Action
Source GCVE Database
Not known to be exploited · CVSS 6.8 Medium · fixed in 9.4.26 : update affected systems when convenient.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 7.7% chance of exploitation in 30 days – higher than 94% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.4.26, 8.10.26
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Feb 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
A security update is available from Red Hat and should be applied to all affected systems. The vendor advisory confirms that the issue is fixed in updated OpenSSH packages for Red Hat Enterprise Linux 8 and 9. Users should ensure the VerifyHostKeyDNS option is used cautiously and update to the patched versions as per Red Hat's guidance.
Description
CVE-2025-26465 is a moderate severity vulnerability in OpenSSH affecting Red Hat Enterprise Linux versions 8 and 9. It allows a man-in-the-middle attack when the VerifyHostKeyDNS option is enabled. A security update addressing this issue is available and should be applied to affected systems.
References
- access.redhat.com/errata/RHSA-2025:16823 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2344780 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_16823.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:3837 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_3837.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:6993 (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.6_release_notes/index (opens in a new tab)
- issues.redhat.com/browse/RHEL-47112 (opens in a new tab)
- issues.redhat.com/browse/RHEL-52293 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_6993.json (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/rhsa-2025_6993.json (opens in a new tab)
- lists.suse.com/pipermail/suse-liberty-linux-updates/2025-May/001285.html (opens in a new tab)
- suse.com/security/cve/CVE-2025-26465/ (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:8385 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2025-26465 (opens in a new tab)
- access.redhat.com/solutions/7109879 (opens in a new tab)
- seclists.org/oss-sec/2025/q1/144 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/02/msg00020.html (opens in a new tab)
- openwall.com/lists/oss-security/2025/02/18/1 (opens in a new tab)
- openwall.com/lists/oss-security/2025/02/18/4 (opens in a new tab)
- theregister.com/2025/02/18/openssh_vulnerabilities_mitm_dos/ (opens in a new tab)
- bugzilla.suse.com/show_bug.cgi?id=1237040 (opens in a new tab)
- security-tracker.debian.org/tracker/CVE-2025-26465 (opens in a new tab)
- ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/008_ssh.patch.sig (opens in a new tab)
- ubuntu.com/security/CVE-2025-26465 (opens in a new tab)
- openssh.com/releasenotes.html (opens in a new tab)
- blog.qualys.com/vulnerabilities-threat-research/2025/02/18/qualys-tru-discovers-two-vulnerabilities-in-openssh-cve-2025-26465-cve-2025-26466 (opens in a new tab)
- lists.mindrot.org/pipermail/openssh-unix-announce/2025-February/000161.html (opens in a new tab)
- security.netapp.com/advisory/ntap-20250228-0003/ (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-26465-detect-vulnerable-openssh (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-26465-mitigate-vulnerable-openssh (opens in a new tab)
- seclists.org/fulldisclosure/2025/May/8 (opens in a new tab)
- seclists.org/fulldisclosure/2025/May/7 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Feb/18 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-585531.html (opens in a new tab)