# CVE-2026-65802 — Microsoft Edge (Chromium-based)

> As of 2026-10-08, CVE-2026-65802 is a HIGH-severity vulnerability in Microsoft Edge (Chromium-based), CVSS v3.1 7.4, EPSS 0.9% (59.1th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-65802, most recently “GovCERT.HK Security Alert A26-08-01: Multiple Vulnerabilities in Microsoft Edge, Office 2019/LTSC 2021/LTSC 2024, Excel 2016, and Microsoft 365 Apps for Enterprise”.

**Last updated:** 2026-10-08

## What is CVE-2026-65802?

External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information over a network.

The record classifies CVE-2026-65802 under weakness class [CWE-73](https://intel.threadlinqs.com/cwe/CWE-73). 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. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 85 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.4 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C`)
- **EPSS (FIRST):** 0.9% probability of exploitation in the next 30 days, higher than 59.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-03, last modified 2026-10-08

## Is CVE-2026-65802 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Microsoft](https://intel.threadlinqs.com/vendors/microsoft): Edge (Chromium-based)

## How to fix CVE-2026-65802

No vendor patch reference has been recorded for CVE-2026-65802 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-2026-65802

1 tracked threat in the Threadlinqs corpus references CVE-2026-65802, either in the campaign’s CVE list or as an indicator on the campaign record.

- [GovCERT.HK Security Alert A26-08-01: Multiple Vulnerabilities in Microsoft Edge, Office 2019/LTSC 2021/LTSC 2024, Excel 2016, and Microsoft 365 Apps for Enterprise](https://intel.threadlinqs.com/threat/TL-2026-1827) — MEDIUM · 2026-08-03

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10.

**Vendor advisory and patch**

- [msrc.microsoft.com — vendor advisory](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65802)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-65802
Full detection coverage and IOCs for threats exploiting CVE-2026-65802 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp