Threat Intelligence / CVE / CVE-2026-87438

CVE-2026-87438 — Google Chrome

CVSS v3.1 9.6 (CRITICAL) · EPSS 0.4% (higher than 37.7% of all scored CVEs) · Priority 6.3/10 · Published 2026-09-09

As of 2026-09-10, CVE-2026-87438 is a CRITICAL-severity vulnerability in Google Chrome, CVSS v3.1 9.6, EPSS 0.4% (37.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-87438, most recently “Multiple Vulnerabilities in Microsoft Edge prior to 154.0.4258.53 (HK GovCERT A26-10-03)”.

Last updated: 2026-09-10

What is CVE-2026-87438?

Out of bounds write in WebGL in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

The record classifies CVE-2026-87438 under weakness class CWE-787. 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 24 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 37.7% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
6.3/10 — 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-2026-87438 being exploited?

No public exploitation evidence for CVE-2026-87438 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-09-10. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

Affected products and versions

How to fix CVE-2026-87438

Vendor advisory: https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-87438

1 tracked threat in the Threadlinqs corpus references CVE-2026-87438, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Other references

Full detection coverage & IOCs for threats exploiting CVE-2026-87438 are available via the Threadlinqs MCP server (Purple tier). View plans →

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