---
id: CVE-2025-32990
title: >-
  A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in
  the template parsing logic within the certtool utility
summary: >-
  A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in
  the template parsing logic within the certtool utility. When it reads certain
  settings from a template file, it allows an attacker to cause an out-of-bounds
  (OO…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-122
vendor: gnu
product: gnutls
affected:
  - gnutls
  - openshift_container_platform = 4.0
  - enterprise_linux = 6.0
  - enterprise_linux = 7.0
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - enterprise_linux = 10.0
published: '2025-07-10'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-32990'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:16115'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:16116'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:17181'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:17348'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:17361'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:17415'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:19088'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:22529'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:7477'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-32990'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2359620'
    label: secalert@redhat.com
  - url: 'https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html'
    label: secalert@redhat.com
  - url: 'http://www.openwall.com/lists/oss-security/2025/07/11/3'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/08/msg00005.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00786
epssPercentile: 0.54242
ingestedAt: '2026-06-29T13:24:34.390Z'
---

## Overview

A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

## Affected

- `gnutls`
- `openshift_container_platform = 4.0`
- `enterprise_linux = 6.0`
- `enterprise_linux = 7.0`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `enterprise_linux = 10.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.