CVE-2021-37975: Google Chromium V8 Use-After-Free Vulnerability
CVSS: 8.8v3.1HighKEVAnalyzed
AliasesUBUNTU-CVE-2021-37975DEBIAN-CVE-2021-37975
Published 08-10-2021Last modified 21-10-2025
Vulnerability summary
CVE-2021-37975 is a high (CVSS 8.8) Use After Free vulnerability in Google Chromium V8. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 34.89% chance of exploitation in the next 30 days, higher than 98.4% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
34.89%
0%100%
High · 0.00 pp in 30 daysKEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 10 · Related 8Timeline
- 08-10-2021PublishedVulnerability first disclosed.
- 03-11-2021Added to CISA KEVGoogle Chromium V8 Use-After-Free Vulnerability
- 17-11-2021CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
Description
Use after free in V8 in Google Chrome prior to 94.0.4606.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 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 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- 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
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
34.89%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 34.89% on 19-09-2026
19-09-202619-10-2026
EPSS score34.89%
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 03-11-2021
- Federal due date
- 17-11-2021
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2021-37975
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- chromium< 97.0.4692.71-0.1
- debian_linuxEOL10.0 | 11.0
Fedoraproject1 product
- fedoraEOL33 | 34 | 35
Google1 product
- chrome≥ unspecified, < 94.0.4606.71 | < 94.0.4606.71
Ubuntu1 product
- chromium-browser< 94.0.4606.71-0ubuntu0.18.04.1
4 vendors · 5 products
References
12 links- crbug.com/1252918Permissions Required
- packetstormsecurity.com/files/172847/Chrome-V8-Logic-Bug-Use-After-Free.htmlThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37975Government ResourceUS Government Resource