CVE-2026-66310: External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclos

Q: How do I fix CVE-2026-66310?

edge: upgrade to 151.0.4129.59. Exact commands for each OS are on this page.

Q: Is CVE-2026-66310 being exploited?

CVE-2026-66310 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-66310 affect?

CVE-2026-66310 affects edge. Severity is high (CVSS 7.7). External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information locally.

Q: How urgent is CVE-2026-66310?

Priority 39/100. High severity; On your watchlist

Routine

HIGH 7.7WATCHLISTUPGRADE

CVE-2026-66310 is a high-severity flaw (CVSS 7.7) affecting edge. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-73
Published	2026-08-04
Last modified	2026-10-23

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-04 00:17 UTCPublished CVE record published
2026-10-23 23:10 UTCUpdated Record last modified

microsoft edge UPGRADE

Affected: < 151.0.4129.59

Fixed in: 151.0.4129.59

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy edge || rpm -q edge || edge --version

2. UPGRADE to 151.0.4129.59 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade edge

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade edge

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · ntpd-rs · FIXED · 1.7.2-3.eln159 · FEDORA-2026-57e4a99310 · source

sudo dnf upgrade --advisory=FEDORA-2026-57e4a99310

Fedora 46 · moby-engine · FIXED · 29.9.2-2.fc46 · FEDORA-2026-4856be87b3 · source

sudo dnf upgrade --advisory=FEDORA-2026-4856be87b3

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-66310?

edge: upgrade to 151.0.4129.59. Exact commands for each OS are on this page.

Is CVE-2026-66310 being exploited?

CVE-2026-66310 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-66310 affect?

CVE-2026-66310 affects edge. Severity is high (CVSS 7.7). External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information locally.

How urgent is CVE-2026-66310?

Priority 39/100. High severity; On your watchlist

Software pages

Microsoft Edge vulnerabilities · Android vulnerabilities

Related CVEs

CVE-2026-62828 MEDIUM 5.4 MITIGATE Improper input validation in Microsoft Edge for Android allows an unauthorized attacker to perform tampering o

References

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