CVE-2026-102302

Chromium CVE-2026-102302: Buffer overflow

CVE-2026-102302 is fixed in 9 products on 3 platforms, first by Google Chrome Dev (EXE) 155.0.8040.2, released September 4, 2026. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 3 platforms

CVSS

8.8

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

29th percentile

<p>This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/2026">Google Chrome Releases</a> for more information.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Google Chrome (EXE)	154.0.8037.93	Google Chrome (EXE) 154.0.8037.93	Sep 29, 2026
Google Chrome Beta (EXE)	155.0.8059.5	Google Chrome Beta (EXE) 155.0.8059.5	Sep 16, 2026
Google Chrome Dev (EXE)	155.0.8040.2	Google Chrome Dev (EXE) 155.0.8040.2	Sep 4, 2026
Microsoft Edge	154.0.4258.62	Microsoft Edge 154.0.4258.62	Oct 5, 2026
Microsoft Edge Beta	155.0.4283.33	Microsoft Edge Beta 155.0.4283.33	Oct 2, 2026
Microsoft Edge Dev	155.0.4273.0	Microsoft Edge Dev 155.0.4273.0	Sep 11, 2026
Microsoft Edge WebView2 Runtime	154.0.4258.53	Microsoft Edge WebView2 Runtime 154.0.4258.53	Oct 1, 2026
macOS
Google Chrome	154.0.8037.93	Google Chrome 154.0.8037.93	Sep 28, 2026
Microsoft Edge	154.0.4258.53	Microsoft Edge 154.0.4258.53	Sep 30, 2026
Linux
chromium · Debian 12.15 (bookworm)	154.0.8037.92-1~deb12u1	DEBIAN-CVE-2026-102302	Oct 1, 2026
chromium · Debian 13.5 (trixie)	154.0.8037.92-1~deb13u1	DEBIAN-CVE-2026-102302	Oct 1, 2026
chromium · Debian 14	154.0.8037.92-1	DEBIAN-CVE-2026-102302	Oct 1, 2026
chromium · opensuse-leap 16.0	154.0.8037.97-bp160.1.1	OPENSUSE-SU-2026:22023-1	Nov 7, 2026

Details

Published
September 29, 2026
Weakness
Stack-based Buffer Overflow
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102302

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