CVE-2022-3591 — Use After Free in GitHub repository vim/vim prior to 9

Use After Free in GitHub repository vim/vim prior to 9.0.0789.

01What is this vulnerability?

Use After Free in GitHub repository vim/vim prior to 9.0.0789.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-02T17:15:09.873
• Last modified: 2026-09-24T15:38:23.437

09References

• github.com — https://github.com/vim/vim/commit/8f3c3c6cd044e3b5bf08dbfa3b3f04bb3f711bad
• huntr.dev — https://huntr.dev/bounties/a5a998c2-4b07-47a7-91be-dbc1886b3921
• security.gentoo.org — https://security.gentoo.org/glsa/202305-16
• github.com — https://github.com/vim/vim/commit/8f3c3c6cd044e3b5bf08dbfa3b3f04bb3f711bad
• huntr.dev — https://huntr.dev/bounties/a5a998c2-4b07-47a7-91be-dbc1886b3921
• security.gentoo.org — https://security.gentoo.org/glsa/202305-16