No exploitation reported

CVE-2023-28531

No exploitation reported by the sources we read.

Published2023-03-17
WeaknessCWE-284

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

Timeline

dates in UTC

2023-03-1704:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-28531?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28531?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Netapp brocade fabric operating system

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Netapp hci bootstrap os

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Netapp solidfire element os

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.openwall.comRelease Notes

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-01-11
OpenCVESSVC decisionnone—
NVDCVSS 3.19.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-2842026-05-28
FIRST EPSSEPSS score3.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-03-17
Last Modified: 2026-10-14
NVD status: Modified

Frequently asked questions

What is CVE-2023-28531?

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

Is CVE-2023-28531 actively exploited?

Active exploitation of CVE-2023-28531 has not been confirmed. Its EPSS score was 3.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-28531?

CVE-2023-28531 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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