# CVE-2021-30632

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

- Page: https://www.vulneraibility.com/cve/CVE-2021-30632
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 63.19% (percentile 99.2)
- Unvetted proof-of-concept code on GitHub: 3 GitHub proofs of concept (first 2021-09-28)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-787
- Published: 2021-10-08

## Affected versions

- Google Chrome: affected < 93.0.4577.82

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
- [other] https://crbug.com/1247763
- [advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
- [advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
- [other] http://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30632

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.