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CVE-2021-30628

28
FAUCET Score

CVE-2021-30628 is a high-severity stack buffer overflow vulnerability in ANGLE, affecting Google Chrome and Fedora Project's Chrome and Fedora prior to version 93.0.4577.82. This flaw allows a remote attacker to potentially corrupt the stack and achieve high impact to confidentiality, integrity, and availability through a crafted HTML page, requiring user interaction. While not listed in CISA's KEV catalog, it was reportedly exploited as a zero-day, with one article confirming active exploitation. There are no public exploit modules or significant community discussion beyond this report.

Impacted Technologies

VendorProductVersion(s)CPE
< 93.0.4577.82CPE match
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

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
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 59th 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: 93.0.961.52
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2021-Sep/CVE-2021-30628

Chromium: CVE-2021-30628 Stack buffer overflow in ANGLE

Sep 14, 2021

References

chromereleases.googleblog.com / 2021/09/stable-channel-update-for-desktop.html
Release NotesVendor Advisory
crbug.com / 1241123
Permissions RequiredVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2