CVE-2025-21185Network attack vector

Sensitive-data disclosure via undisclosed access-control failure

Published Jan 17, 2025 · Updated Jun 9, 2026

Improper access control in Microsoft Edge (Chromium-based) before 132.0.2957.115 allows remote attackers to disclose sensitive data. Microsoft has not published the affected component or the access-control operation that mishandles untrusted input. Exploitation requires user interaction and network delivery; the reported consequence is confidentiality loss without integrity or availability impact.

CVSS severity6.5
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Microsoft Edge (Chromium-based) before 132.0.2957.115 allows remote attackers to disclose sensitive data. Microsoft has not published the affected component or the access-control operation that mishandles untrusted input. Exploitation requires user interaction and network delivery; the reported consequence is confidentiality loss without integrity or availability impact.

The record

CVE
CVE-2025-21185
Published
Jan 17, 2025
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 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 <132.0.2957.115

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0.0 <132.0.2957.115

Published CVSS scores

6.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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-284Improper Access Control

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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