Medium 5.3Published Feb 10, 2025

CVE-2024-12133Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos

Updated under an hour ago (Oct 28, 2026, 5:10 AM ET)

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It affects Red Hat Enterprise Linux 8 and 21 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 in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially crafted certificate, causing a denial of service attack.

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 0:4.13-5.el8_10 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_aus	from 0:3.6.14-10.el8_4.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life	from 0:3.6.14-10.el8_4.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_e4s	from 0:3.6.16-7.el8_8.4 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_tus	from 0:3.6.16-7.el8_8.4 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus	from 0:4.16.0-8.el9_4.1 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
1–10 of 22

References

References

https://access.redhat.com/errata/RHSA-2025:17347	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:4049	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:7077	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:8021	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2025:8385	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:30849	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:30850	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:33125	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2024-12133	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2344611	issue-tracking, x-refsource-redhat
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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.