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Fencer Vulns
medium 5.3

CVE-2024-11738 json

Rustls: rustls network-reachable panic in `acceptor::accept`

published 2024-11-22 23 mo ago modified 2026-09-10 1 mo ago also GHSA-qg5g-gv98-5ffh , RUSTSEC-2024-0399 , EUVD-2024-34179

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

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.

Patch / fix

  • crates.io rustls 0.23.0, 0.23.18
  • himmelblau SLE Module for Basesystem 15 SP7 2.3.9+git0.a9fd29b-150700.3.15.1

suse advisories SUSE-SU-2026:1361-1

  • himmelblau openSUSE Tumbleweed 0.7.7+git.0.b48d0bb-1.1

opensuse advisories openSUSE-SU-2024:14539-1

  • rust Azure Linux 3.0 1.86.0-6

azure linux advisories AZL-61546

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-11738 updated cvss 5.3

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

  • Red Hat Trusted Artifact Signer tuffer-rhel9, tuftool-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/rustls/rustls/issues/2227 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
crates.io rustls
>=0.23.13, <0.23.18
>=0.23.0, <0.23.0
0.23.18
0.23.0

Affected products

  • Red Hat Red Hat Trusted Artifact Signer

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.