CVE-2026-84350: Chromium: CVE-2026-84350 Use after free in TabStrip

unknownCVE-2026-84350

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-09-08
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84350

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-843500.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-84350	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highPAN-SA-2026-0012 Chromium: Monthly Vulnerability Update (September 2026) (Severity: HIGH)paloalto
high[UPDATE] [hoch] Google Chrome: Mehrere Schwachstellencert-bund
unknownMicrosoft Edge Multiple Vulnerabilitieshkcert
unknownMultiples vulnérabilités dans Microsoft Edge (04 septembre 2026)cert-fr-avis
unknownGoogle Chrome Multiple Vulnerabilitieshkcert
highCVE-2026-84350: Use after free in TabStrip in Google Chrome prior to 152.0.7977.75 allowed a remote attacker l…nvd
unknownMultiples vulnérabilités dans Google Chrome (02 septembre 2026)cert-fr-avis

Recent advisories for Chromium

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highPAN-SA-2026-0012 Chromium: Monthly Vulnerability Update (September 2026) (Severity: HIGH)paloalto · 2026-09-09
unknownCVE-2026-87656: Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed a re…nvd · 2026-09-09
mediumCVE-2026-87655: Clickjacking in Downloads in Google Chrome prior to 153.0.8010.36 allowed a remote attacker le…nvd · 2026-09-09
mediumCVE-2026-87653: UI misrepresentation in FullScreen in Google Chrome on on Windows prior to 153.0.8010.36 allow…nvd · 2026-09-09
mediumCVE-2026-87651: Incorrect authorization in Paint in Google Chrome prior to 153.0.8010.36 allowed a remote atta…nvd · 2026-09-09
unknownCVE-2026-87645: Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed a re…nvd · 2026-09-09