CVE-2026-66310
CVE-2026-66310 is a high-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.
Key facts
- Severity: High (CVSS 3.x base score 7.7)
- EPSS exploit prediction: 0% (30th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-73
- Affected product: Microsoft Edge
- Published:
- Last modified:
Description
External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information locally.
Frequently asked questions
- What is CVE-2026-66310?
- External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information locally.
- How severe is CVE-2026-66310?
- CVE-2026-66310 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2026-66310 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-66310?
- CVE-2026-66310 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-66310?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-66310 published?
- CVE-2026-66310 was published on 2026-08-04 and last updated on 2026-08-07.
References
Affected products (1)
- cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:*
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