Critical 9.8Published Jan 12, 2023

CVE-2022-3515A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser.

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects gnupg libksba and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for gnupg libksba Exploited in the last 30 days

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.

CVSS: 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-190
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

gnupg libksba gnupg:libksba	before 1.6.3	NVD
gpg4win gpg4win gpg4win:gpg4win	from 2.0.0 before 4.1.0	NVD
gnupg vs-desktop gnupg:vs-desktop	from 3.1.16 before 3.1.26	NVD
gnupg gnupg gnupg:gnupg	from 2.1.0 before 2.2.41; from 2.3.0 before 2.4.0	NVD

References

References

https://access.redhat.com/security/cve/CVE-2022-3515	patch, third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2135610	exploit, issue-tracking, third-party-advisory
https://dev.gnupg.org/rK4b7d9cd4a018898d7714ce06f3faf2626c14582b	exploit, patch, third-party-advisory
https://security.netapp.com/advisory/ntap-20230706-0008/
https://www.gnupg.org/blog/20221017-pepe-left-the-ksba.html	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.