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VulnerabilityCVE-2026-87643Published 2026-09-09

CVE-2026-87643 — Google Chrome

criticalPublic exploit1 PoC repo

As of 2026-09-10, CVE-2026-87643 is a CRITICAL-severity vulnerability in Google Chrome, CVSS v3.1 9.6, EPSS 0.4% (38.0th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-87643, most recently “Multiple Vulnerabilities in Microsoft Edge prior to 154.0.4258.53 (HK GovCERT A26-10-03)”.

CVSS v3.1
9.6/10Critical
EPSS
0.4%Higher than 38.0% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
8.3/10Threadlinqs triage score
Published
Updated 2026-09-10
CVSS v3.1 9.6 (CRITICAL) · EPSS 0.4% (higher than 38.0% of all scored CVEs) · Priority 8.3/10 · Published 2026-09-09

Last updated:

What is CVE-2026-87643?

Integer overflow in GPU in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

The record classifies CVE-2026-87643 under weakness class CWE-190. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 45 days ago.

Severity and exploitation probability

CVSS v3.1 base score
9.6 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS (FIRST)
0.4% probability of exploitation in the next 30 days, higher than 38.0% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
8.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-09, last modified 2026-09-10

Is CVE-2026-87643 being exploited?

Weaponised exploit code for CVE-2026-87643 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 45 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-87643

No vendor patch reference has been recorded for CVE-2026-87643 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-87643

1 tracked threat in the Threadlinqs corpus references CVE-2026-87643, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .

Other references