Buffer overflow in Minisat
CVE-2026-2644
A weakness has been identified in niklasso minisat up to 2.2.0. This issue affects the function Solver::value in the library core/SolverTypes.h of the component DIMACS File Parser. This manipulation of the argument variable index with the input 2147483648 causes out-of-bounds read. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (10.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- Minisat
- Niklasso Minisat — versions 2.0, 2.1, 2.2.0
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/niklasso/minisat/issues/55 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- github.com/niklasso/minisat/issues/55 (issue-tracking, Exploit, exploit, Issue Tracking)
- github.com/niklasso/minisat/ (Product, product, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-2644?
- CVE-2026-2644 is a low-severity vulnerability in Minisat, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-02-18.
- How severe is CVE-2026-2644?
- Low severity. CVSS v3 base score is 3.3 out of 10.