CVE-2025-6395: medium-severity vulnerability in libgnutls
Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.8%
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected products
libgnutlsRed Hat · Red Hat Ceph Storage 7Red Hat · Red Hat Discovery 2Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat Insights proxy 1.5Red Hat · Red Hat OpenShift Container Platform 4Related CVEs — libgnutls
In the same product, most dangerous first.
CVE-2024-6387HIGHOpenssh: regresshion - race condition in ssh allows rce/dosEPSS 99.5%CVE-2023-52356HIGHLibtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of serviceEPSS 2.5%CVE-2026-33845HIGHGnutls: gnutls: denial of service via dtls zero-length fragmentEPSS 2.1%CVE-2023-52355HIGHLibtiff: tiffrasterscanlinesize64 produce too-big size and could cause oomEPSS 1.8%CVE-2024-12086MEDIUMRsync: rsync server leaks arbitrary client filesEPSS 1.8%CVE-2025-49796CRITICALLibxml: type confusion leads to denial of service (dos)EPSS 1.6%
References
https://access.redhat.com/errata/RHSA-2025:16115https://access.redhat.com/errata/RHSA-2025:16116https://access.redhat.com/errata/RHSA-2025:17181https://access.redhat.com/errata/RHSA-2025:17348https://access.redhat.com/errata/RHSA-2025:17361https://access.redhat.com/errata/RHSA-2025:17415https://access.redhat.com/errata/RHSA-2025:19088https://access.redhat.com/errata/RHSA-2025:22529https://access.redhat.com/security/cve/CVE-2025-6395https://bugzilla.redhat.com/show_bug.cgi?id=2376755https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://gitlab.com/gnutls/gnutls/-/issues/1718