Is CVE-2026-0391 in the CISA KEV catalog?

No. CVE-2026-0391 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-0391?

CVE-2026-0391 has a CVSS v3 base score of 6.5 (Moderate).

What is the EPSS score for CVE-2026-0391?

CVE-2026-0391 has an EPSS score of 0.60% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0391?

Upgrade Microsoft Edge to 143.0.3650.66 or later.

CVE & CISA-KEV Catalog

CVE-2026-0391

MEDIUM

6.5

CVSS v3

NVD

Description

User interface (ui) misrepresentation of critical information in Microsoft Edge for Android allows an unauthorized attacker to perform spoofing over a network.

CWE-451

How to fix

Remediation Available

Microsoft EdgeWindows application

Affected:143.0.3650.66Fixed in:143.0.3650.66Microsoft Corporation

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C

Exploit Intelligence

0.60%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-18.