MEDIUM

CVE-2025-32988

CVSS v3

6.5

MEDIUM

EPSS Score

1.5 %

exploit probability, as of 2026-10-14

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

gnutlsAlmaLinux:10all versions · fixed in 3.8.9-9.el10_0.14and 5 other packages
gnutlsAlmaLinux:9all versions · fixed in 3.8.3-6.el9_6.2and 4 other packages
gnutlsAlmaLinux:8all versions · fixed in 3.6.16-8.el8_10.4and 4 other packages

Vendor advisories

CVE-2025-32988 Red Hat Product Security371 products fixed · 13 known affected
gnutls: Vulnerability in GnuTLS otherName SAN export
gnutls as a component of Red Hat Enterprise Linux 6 · gnutls-devel as a component of Red Hat Enterprise Linux 6 · gnutls-guile as a component of Red Hat Enterprise Linux 6
RHSA-2026:7477 Red Hat Product Security17 products fixed
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
RHSA-2025:22529 Red Hat Product Security3 products fixed
Red Hat Security Advisory: Red Hat Ceph Storage
RHSA-2025:19088 Red Hat Product Security2 products fixed
Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage
RHSA-2025:17415 Red Hat Product Security75 products fixed
Red Hat Security Advisory: gnutls security, bug fix, and enhancement update
RHSA-2025:17361 Red Hat Product Security75 products fixed
Red Hat Security Advisory: gnutls security, bug fix, and enhancement update

6 more advisories

Full record on NVD

Description

A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Published: 2025-07-10
Last Modified: 2026-05-12

Frequently asked questions

What is CVE-2025-32988?

Is CVE-2025-32988 actively exploited?

Active exploitation of CVE-2025-32988 has not been confirmed. Its EPSS score was 1.5% on 2026-10-14, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-32988?

CVE-2025-32988 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.

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