CVE intelligence

CVE-2024-12243

Vulnerability intelligence

Published Feb 10, 2025Sources checked Oct 3, 2026

5.3MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2024-12243 and is rated Medium severity with a CVSS score of 5.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

CBL-Mariner Releases

Vendor-listed releases

3.8.3-4
3.7.11-3

CISA KEVNot listedBased on the latest collected catalog

EPSS1.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2024-12243?

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.