5.3

CVE-2024-12133: libtasn1 Inefficient Algorithmic Complexity

CVSS: 5.3v3.1MediumDeferred
AliasesALPINE-CVE-2024-12133MGASA-2025-0043SUSE-SU-2025:0512-1
Published 10-02-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-12133 is a medium (CVSS 5.3) Inefficient Algorithmic Complexity vulnerability in libtasn1. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.11%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 1
OPENSUSE-SU-2025:14835-1RHSA-2026:30849RHSA-2026:30850RHSA-2026:33125

Timeline

  1. 10-02-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

1.11%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

0.00 pp

From 1.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse24 products
  • libtasn1&distro=SUSE Enterprise Storage 7.1< 4.13-150000.4.11.1
  • libtasn1&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 4.13-150000.4.11.1
  • libtasn1&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 4.13-150000.4.11.1
  • libtasn1&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 4.13-150000.4.11.1
  • libtasn1&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 4.13-150000.4.11.1
Redhat6 products
  • libtasn1< 0:4.16.0-8.el9_2.1 | < 0:4.13-5.el8_10 | < 0:4.16.0-9.el9 | < 0:4.16.0-8.el9_4.1
  • libtasn1-debuginfo< 0:4.16.0-8.el9_2.1 | < 0:4.13-5.el8_10 | < 0:4.16.0-9.el9 | < 0:4.16.0-8.el9_4.1
  • libtasn1-debugsource< 0:4.16.0-8.el9_2.1 | < 0:4.13-5.el8_10 | < 0:4.16.0-9.el9 | < 0:4.16.0-8.el9_4.1
  • libtasn1-devel< 0:4.16.0-8.el9_2.1 | < 0:4.13-5.el8_10 | < 0:4.16.0-9.el9 | < 0:4.16.0-8.el9_4.1
  • libtasn1-tools< 0:4.16.0-8.el9_2.1 | < 0:4.13-5.el8_10 | < 0:4.16.0-9.el9 | < 0:4.16.0-8.el9_4.1
Opensuse2 products
  • libtasn1&distro=openSUSE Leap 15.6< 4.13-150000.4.11.1
  • libtasn1&distro=openSUSE Tumbleweed< 4.20.0-1.1
Alpine1 product
  • libtasn1< 4.20.0-r0
Debian1 product
  • libtasn1-6< 4.20.0-1 | < 4.19.0-2+deb12u1 | < 4.16.0-2+deb11u2
Mageia1 product
  • libtasn1< 4.20.0-1.mga9
Ubuntu1 product
  • libtasn1-6All versions (No fix recorded) | < 4.16.0-2ubuntu0.1 | < 4.18.0-4ubuntu0.1 | < 4.19.0-3ubuntu0.24.04.1

7 vendors · 36 products

References

41 links
Show all 41 references