Secuno
ENNL
Book demo

CVE-2021-37975

Google Chromium V8 Use-After-Free

8.8 HIGHActively exploited (CISA KEV)EPSS 34.9%
  1. Published8 Oct 2021
  2. Added to CISA KEV3 Nov 2021
  3. Remediation due17 Nov 2021
Actively exploited (CISA KEV)

Google Chromium V8 Engine contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Added to KEV: 3 Nov 2021Federal remediation due: 17 Nov 2021

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Google Chrome< 94.0.4606.71
Debian Linux10.0 · 11.0
Fedoraproject Fedora33 · 34 · 35

Remediation

Fixed in
Google Chrome≥ 94.0.4606.71

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-859658.0
Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7…
CVE-2026-57599.8
A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of…
CVE-2026-1071838.1
llama.cpp before b11393 contains a use-after-free and double free vulnerability in…
CVE-2026-553309.8
In BluetoothCccHandlerCallbackImpl of bluetooth_ccc.cc, there is a possible…
CVE-2026-1064238.8
Use after free in Media in Google Chrome prior to 155.0.8059.39 allowed a remote…
CVE-2026-1064218.8
Use after free in PDF in Google Chrome prior to 155.0.8059.39 allowed a remote attacker…

Frequently asked

Is CVE-2021-37975 being actively exploited?

Yes. CVE-2021-37975 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2021-37975?

CVE-2021-37975 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 34.9% probability of exploitation.

Which products are affected by CVE-2021-37975?

Affected products include Google Chrome, Debian Linux, Fedoraproject Fedora.

How do I fix CVE-2021-37975?

Upgrade affected software to a fixed version, for example Google Chrome 94.0.4606.71 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-37975 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.