CVE-2026-66310 Microsoft Edge for Android Information Disclosure Vulnerability

What is CVE-2026-66310?

CVE-2026-66310 is a high-severity vulnerability in Microsoft Edge, published on 3 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

Weakness: CWE-73

Which versions are affected by CVE-2026-66310?

It affects 1 product.

Products include Microsoft Edge.

How do I fix CVE-2026-66310?

No fix has been published for CVE-2026-66310 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-66310 being exploited?

There is no known exploitation of CVE-2026-66310 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Edge

• CVE-2021-26411 Microsoft Internet Explorer Memory Corruption Exploited High 8.8
• CVE-2016-7200 Microsoft Edge Memory Corruption Exploited High 8.8
• CVE-2016-7201 Microsoft Edge Memory Corruption Exploited High 8.8
• CVE-2017-0037 Microsoft Edge and Internet Explorer Type Confusion Exploited High 8.1
• CVE-2016-3351 Microsoft Internet Explorer and Edge Information Disclosure Exploited Medium 6.5

All Microsoft Edge vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-78fm-87r7-5p5x.