# CVE-2026-87481 — Google Chrome

> As of 2026-09-10, CVE-2026-87481 is a HIGH-severity vulnerability in Google Chrome, CVSS v3.1 8.3, EPSS 0.4% (33.0th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-87481, 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-2026-87481?

Incorrect authorization in WebView in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

The record classifies CVE-2026-87481 under weakness class [CWE-863](https://cwe.mitre.org/data/definitions/863.html). 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:** 8.3 — HIGH (`CVSS:3.1/AV:N/AC:H/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 33.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 7.5/10 — 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-2026-87481 being exploited?

Weaponised exploit code for CVE-2026-87481 is publicly available. 1 public proof-of-concept repository is tracked for this identifier.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2026/CVE-2026-87481.md) (trickest)

## Affected products and versions

- **Google**: Chrome

## How to fix CVE-2026-87481

Vendor advisory: [https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html](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-2026-87481

1 tracked threat in the Threadlinqs corpus references CVE-2026-87481, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Multiple Vulnerabilities in Microsoft Edge prior to 154.0.4258.53 (HK GovCERT A26-10-03)](https://intel.threadlinqs.com/threat/TL-2026-2838) — CRITICAL · 2026-10-02

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-02. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [chromereleases.googleblog.com](https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html)
- [issues.chromium.org](https://issues.chromium.org/issues/498730641)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-87481
Full detection coverage and IOCs for threats exploiting CVE-2026-87481 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp