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CVE-2024-12243VulnerabilityPublished Updated

CVE-2024-12243: Inefficient Algorithmic Complexity

Source GCVE Database

0

Not known to be exploited · CVSS 5.3 Medium · fixed in 9.4.2 : update affected systems when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.2% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.4.2, 8.10.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

Red Hat has released official security updates that fix this vulnerability. Users of affected Red Hat Enterprise Linux 8 and 9.4 EUS versions should apply the provided security updates as detailed in Red Hat advisory RHSA-2025:4051. No additional mitigation actions are required beyond applying the official patches.

Description

CVE-2024-12243 is a moderate severity vulnerability in the GnuTLS library's libtasn1 component affecting Red Hat Enterprise Linux 8 and 9.4 Extended Update Support. It involves inefficient DER decoding that can lead to a remote denial of service (DoS). Red Hat has released security updates addressing this issue across multiple architectures including x86_64, s390x, ppc64le, and aarch64.

References

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