# CVE-2021-21193

Use after free in Blink in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

- Page: https://www.vulneraibility.com/cve/CVE-2021-21193
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 9.95% (percentile 95.7)
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2022-03-28)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-416
- Published: 2021-03-16

## Affected versions

- Google Chrome: affected < 89.0.4389.90

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

## References

- [other] https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_12.html
- [other] https://crbug.com/1186287
- [advisory] https://www.debian.org/security/2021/dsa-4886
- [advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/
- [advisory] https://security.gentoo.org/glsa/202104-08
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21193

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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.