CVE-2023-28531: openssh · n/a
Affects opensshSource CVE Database V5
Not known to be exploited : upgrade to 9.3 when convenient.
Data as of 25 Oct 2026, 22:28 UTC
Rated Medium by the CNA (mitre) · No CVSS score from NVD or the CNA
- EPSS
- 2.9% chance of exploitation in 30 days – higher than 87% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.3
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Mar 2023
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 2026-10-25.
What to do
Upgrade debian/openssh to 9.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Debiandebian/opensshpkg:deb/debian/opensshOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade OpenSSH to version 9.3 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Description
OpenSSH versions from 8.9 up to but not including 9.3 have a vulnerability in ssh-add where smartcard keys are added to ssh-agent without enforcing the intended per-hop destination constraints. This could potentially allow keys to be used in unintended contexts. The issue is fixed in OpenSSH version 9.3.
References
- openwall.com/lists/oss-security/2023/03/15/8 (opens in a new tab)
- security.netapp.com/advisory/ntap-20230413-0008/ (opens in a new tab)
- security.gentoo.org/glsa/202307-01 (opens in a new tab)
- debian.org/security/2023/dsa-5586 (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AN2UDTXEUSKFIOIYMV6JNI5VSBMYZOFT/ (opens in a new tab)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AN2UDTXEUSKFIOIYMV6JNI5VSBMYZOFT/ (opens in a new tab)