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Public proof of conceptFix available

CVE-2024-11738

A public proof of concept exists; no exploitation attested.

  • Published2024-12-06
  • Fixed in0.23.18 · 0.23.0
  • WeaknessCWE-248

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service (panic) via a fragmented TLS ClientHello message.

Timeline

dates in UTC
  1. 2024-12-0615:15CVE publishedNVD

Versions per branch

OSV · NVD
rustls
BranchAffectedFixed in
0.23≥ 0.23.13, < 0.23.180.23.18
0.23≥ 0.23.0, < 0.23.00.23.0
Rustls project rustls
BranchAffectedFixed in
0.23= 0.23.13no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA3 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-11-20

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • himmelblauSUSE:Linux Enterprise Module for Basesystem 15 SP7all versions · fixed in 2.3.9+git0.a9fd29b-150700.3.15.1
  • himmelblauopenSUSE:Tumbleweedall versions · fixed in 0.7.7+git.0.b48d0bb-1.1
  • rustAzure Linux:3from 1.85.0 · fixed in 1.86.0-6
  • rust-rustlsUbuntu:26.10all versions · no fixed version listed
  • rust-rustlsUbuntu:26.04:LTSall versions · no fixed version listed
  • rust-rustlsUbuntu:25.10all versions · no fixed version listed
  • rust-rustlsUbuntu:24.04:LTSall versions · no fixed version listed

Vendor advisories

  • CVE-2024-11738 Red Hat Product Security

    rustls: rustls network-reachable panic in `Acceptor::accept`

Full record on NVD

Fix

  1. Update rustls to 0.23.18 · 0.23.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-12-06
  • CNACVSS 3.15.3known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-248known since 2026-10-23
  • FIRST EPSSEPSS score0.7 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2024-11-25

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2024-12-06
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-qg5g-gv98-5ffh

Frequently asked questions

What is CVE-2024-11738?

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service (panic) via a fragmented TLS ClientHello message.

Is CVE-2024-11738 actively exploited?

A proof-of-concept exploit exists for CVE-2024-11738, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2024-11738?

CVE-2024-11738 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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