CVE-2021-4322: google chrome Use After Free
CVSS: 8.8v3.1HighModified
AliasesDEBIAN-CVE-2021-4322
Published 28-07-2023Last modified 13-02-2025
Vulnerability summary
CVE-2021-4322 is a high (CVSS 8.8) Use After Free vulnerability in google chrome. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.54%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 28-07-2023PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
Description
Use after free in DevTools in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Medium)
CVSS metrics
3 scores · 3 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.54%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
0.00 pp
From 0.54% on 19-09-2026
19-09-202619-10-2026
EPSS score0.54%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (crbug.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- chromium< 97.0.4692.71-0.1
Google1 product
- chrome≥ 91.0.4472.77, < 91.0.4472.77 | < 91.0.4472.77
2 vendors · 2 products
References
4 links- chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.htmlRelease NotesVendor Advisory
