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Misconfiguration
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CVE Vulnerabilities

CVE-2025-32989

Improper Certificate Validation

Published: Jul 10, 2025 | Modified: Dec 01, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-32989
CWEhttps://cwe.mitre.org/data/definitions/295.html

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.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

NameVendorStart VersionEnd Version
GnutlsGnu- (including)- (including)
Red Hat Enterprise Linux 10RedHatgnutls-0:3.8.9-9.el10_0.14*
Red Hat Enterprise Linux 9RedHatgnutls-0:3.8.3-6.el9_6.2*
Red Hat Enterprise Linux 9RedHatgnutls-0:3.8.3-6.el9_6.2*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatgnutls-0:3.7.6-21.el9_2.4*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatgnutls-0:3.8.3-4.el9_4.4*
Red Hat Ceph Storage 7RedHatrhceph/rhceph-7-rhel9:sha256:ce213d48fbefae6b9d5f5a64b79c6ed016afcb646bf7b5742707ed31f9a464a2*
Red Hat Discovery 2RedHatdiscovery/discovery-ui-rhel9:sha256:4784c2680572f9d091fcfb8c593d5424c0fcd8ea9cd51d25ddaf2f72abc7da65*
Red Hat Insights proxy 1.5RedHatinsights-proxy/insights-proxy-container-rhel9:sha256:8eb6b896e1eac4080a564e146f95c4166e47ca137083b37119027c6a77011207*
Gnutls28Ubuntudevel*
Gnutls28Ubuntufips-updates/jammy*
Gnutls28Ubuntufips-updates/noble*
Gnutls28Ubuntujammy*
Gnutls28Ubuntunoble*
Gnutls28Ubuntuoracular*
Gnutls28Ubuntuplucky*
Gnutls28Ubuntuquesting*
Gnutls28Ubuntuupstream*

Potential Mitigations

References

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