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CVE-2021-37985

27
FAUCET Score

CVE-2021-37985 is a use-after-free vulnerability in Google Chrome's V8 JavaScript engine, affecting versions prior to 95.0.4638.54, as well as Debian Chrome and Debian Linux. A remote attacker could exploit this by convincing a user to allow debugger connection, potentially leading to heap corruption via a crafted HTML page. With a CVSS score of 8.8 (High), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or inclusion in the CISA KEV catalog, though it garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 95.0.4638.54CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 57th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: Microsoft Edge (Chromium-based)Fixed in: 95.0.1020.30
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2021-Oct/CVE-2021-37985

Chromium: CVE-2021-37985 Use after free in V8

Oct 12, 2021

References

chromereleases.googleblog.com / 2021/10/stable-channel-update-for-desktop_19.html
Vendor Advisory
crbug.com / 1241860
Permissions RequiredVendor Advisory
debian.org / security/2022/dsa-5046
Third Party Advisory