CVE-2025-32989
5.3
MEDIUM
CVSS 3.1
EPSS 0.11%
Description
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
How to fix CVE-2025-32989
To remediate CVE-2025-32989, upgrade the affected package to a fixed version below.
- —upgrade to 3.8.12-r0 or later
- —upgrade to 3.7.9-2+deb12u5 or later
Is CVE-2025-32989 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.8.12-r0
- from 0, < 3.7.9-2+deb12u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |