Medium 5.3Published Feb 10, 2025

CVE-2024-12243Gnutls: gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos

Updated under an hour ago (Oct 26, 2026, 2:00 PM ET)

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It affects Red Hat Enterprise Linux 8 and 18 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat Enterprise Linux 8

Exploited in the last 30 days

A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-407
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Deferred
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 8 redhat:enterprise_linux	from 0:3.6.16-8.el8_10.3 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions redhat:rhel_e4s	from 0:3.7.6-21.el9_2.4 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus	from 0:3.8.3-4.el9_4.2 not affected	CNA record
Red Hat Red Hat Discovery 1.14 redhat:discovery	from 1.14.3-1748529279 not affected	CNA record
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift	4	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens RUGGEDCOM ROX MX5000 siemens:ruggedcom_rox_mx5000 (from the name)	before V2.17.0	CISA ADP
Siemens RUGGEDCOM ROX MX5000RE siemens:ruggedcom_rox_mx5000re (from the name)	before V2.17.0	CISA ADP
1–10 of 19

References

References

https://access.redhat.com/errata/RHSA-2025:17361	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:4051	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:7076	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:8020	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:8385	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2024-12243	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2344615	issue-tracking, x-refsource-redhat
https://gitlab.com/gnutls/gnutls/-/issues/1553
https://gitlab.com/gnutls/libtasn1/-/issues/52
https://lists.debian.org/debian-lts-announce/2025/02/msg00027.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.