An issue in Cppcheck 2.12 dev allows a local attacker to execute arbitrary code via the removeContradiction parameter in token.cpp:1934.

published 2023-09-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-42817

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

Patch / fix

distros 2

opensuse azure linux

cppcheck openSUSE Tumbleweed 2.12.1-3.1
cppcheck Package Hub 15 SP5, openSUSE Leap 15.5 2.12.1-bp155.2.3.1

opensuse advisories openSUSE-SU-2024:13526-1 openSUSE-SU-2023:0413-1

cppcheck Azure Linux 3.0 2.18.3-1

azure linux advisories AZL-45396

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-2023-39070 updated 2026-03-27 cvss 7.8

cppcheck: a local code execution via the removeContradiction parameter in token.cpp:1934 due to use-after-free

Red Hat All currently supported Red Hat products
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: no
Technical impact: total
Assessed: 2 y ago (2024-09-26)

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

sourceforge.net https://sourceforge.net/p/cppcheck/discussion/general/thread/fa43fb8ab1/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-416 Use After Free

References

sourceforge.net /p/cppcheck/discussion/general/thread/fa43fb8ab1/
exploit, issue-tracking, third-party-advisory

Sources

CVE List CVE-2023-39070
NVD CVE-2023-39070

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.

Summary