CVE-2021-21148

critical KEV
Published 2021-11-03 ยท Modified 2021-11-03
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
10.0

Description

Google Chromium V8 Engine contains a heap buffer overflow 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.

CISA KEV

Vendor
Google
Product
Chromium V8
Due date
2021-11-17

Predictions

Exploit likelihood
99%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

OS impact

suse SUSE Affected 1 release
VersionStatusFixed in
โ€” Affected โ€”
arch Arch Fixed 1 release
VersionStatusFixed in
โ€” Fixed 3.6.2165.36-1
debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 88.0.4324.150-1
sid Fixed 88.0.4324.150-1
forky Fixed 88.0.4324.150-1
bullseye Fixed 88.0.4324.150-1
bookworm Fixed 88.0.4324.150-1

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.