CVE-2024-12243

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2025-02-10. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

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 v3
5.3
EG Score
5.3(medium)
EPSS
66.1%
KEV
Not listed

Published

February 10, 2025

Last Modified

July 14, 2026

References (9)

Vendor Advisories for CVE-2024-12243(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgnutls30t64 (3.8.3-1.1ubuntu3.3) @ noble2026-05-21ubuntu
redhatgnutls-0:3.7.6-21.el9_2.42025-10-06redhat
redhatdiscovery/discovery-ui-rhel9:sha256:492e412759cf0eedfa5b557f7b0865f8864f84d0ed75e11dc8d7a840837d96442025-06-02redhat
redhatgnutls-0:3.8.3-4.el9_4.22025-05-20redhat
redhatgnutls-0:3.8.3-6.el92025-05-13redhat
redhatgnutls-0:3.6.16-8.el8_10.32025-04-23redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 125 total refreshes for this CVE.

  1. 2026-07-22 14:07 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
  3. 2026-07-20 17:06 UTCEPSS rescore
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  19. 2026-07-10 18:22 UTCOSV refresh
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  19. 2026-06-22 14:24 UTCEPSS rescore
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  21. 2026-06-22 02:26 UTCOSV refresh
  22. 2026-06-21 14:55 UTCEPSS rescore
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  24. 2026-06-21 01:58 UTCEPSS rescore
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  26. 2026-06-19 19:24 UTCEPSS rescore
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  28. 2026-06-18 17:51 UTCEPSS rescore
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  45. 2026-06-08 14:16 UTCEPSS rescore
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  47. 2026-06-07 15:24 UTCEPSS rescore
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  49. 2026-06-06 13:46 UTCEPSS rescore
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  51. 2026-06-05 22:46 UTCEPSS rescore
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  53. 2026-06-05 06:09 UTCEPSS rescore
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  55. 2026-06-04 13:11 UTCEPSS rescore
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  58. 2026-06-03 19:39 UTCOSV refresh
  59. 2026-06-02 20:12 UTCEPSS rescore
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  74. 2026-05-26 07:18 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2024-12243?
CVE-2024-12243 is a medium vulnerability published on February 10, 2025. 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…
When was CVE-2024-12243 disclosed?
CVE-2024-12243 was first published in the National Vulnerability Database on February 10, 2025, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-12243 actively exploited?
CVE-2024-12243 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-12243?
CVE-2024-12243 has a CVSS v4.0 base score of 5.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2024-12243?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-12243, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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