CVE-2025-21262Network attack vector

Unauthenticated spoofing of security-critical browser information

Published Jan 24, 2025 · Updated Jun 9, 2026

UI misrepresentation in Microsoft Edge before 132.0.2957.127 allows remote attackers to spoof security-critical browser information. Microsoft has not disclosed the affected UI component or how network-delivered content causes Edge to display critical information incorrectly. Exploitation requires user interaction; the documented consequence is spoofed critical information rather than code execution or service interruption.

CVSS severity5.4
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI misrepresentation in Microsoft Edge before 132.0.2957.127 allows remote attackers to spoof security-critical browser information. Microsoft has not disclosed the affected UI component or how network-delivered content causes Edge to display critical information incorrectly. Exploitation requires user interaction; the documented consequence is spoofed critical information rather than code execution or service interruption.

The record

CVE
CVE-2025-21262
Published
Jan 24, 2025
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-451
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0.0 <132.0.2957.127

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0.0 <132.0.2957.127

Published CVSS scores

5.4Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-451User Interface (UI) Misrepresentation of Critical Information

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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