Cyber Resilience

CVE-2025-21404

Microsoft Edge Chromium ≤ 133.0.3065.51

Published
06 February 2025
Modified
11 February 2025
Patch / advisory
View advisory
CVSS Score v3.1 4.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS Score 0.011 62th percentile
Risk Priority 39 floored blend · peak EPSS

Summary

CVE-2025-21404 is a medium-severity The UI Performs the Wrong Action (CWE-449) vulnerability in Microsoft Edge Chromium. Its CVSS base score is 4.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Phishing (T1566); ranked in the top 38% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

Microsoft Edge (Chromium-based) Spoofing Vulnerability

CWE(s)
CWE-449NVD-CWE-noinfoCWE-451

Related Threats

MITRE ATT&CK Enterprise Techniques

T1566 Phishing Initial Access
Adversaries may send phishing messages to gain access to victim systems.
attack.mitre.org →
T1566.002 Spearphishing Link Initial Access
Adversaries may send spearphishing emails with a malicious link in an attempt to gain access to victim systems.
attack.mitre.org →
T1566.003 Spearphishing via Service Initial Access
Adversaries may send spearphishing messages via third-party services in an attempt to gain access to victim systems.
attack.mitre.org →
T1598 Phishing for Information Reconnaissance
Adversaries may send phishing messages to elicit sensitive information that can be used during targeting.
attack.mitre.org →
T1598.003 Spearphishing Link Reconnaissance
Adversaries may send spearphishing messages with a malicious link to elicit sensitive information that can be used during targeting.
attack.mitre.org →
T1204 User Execution Execution
An adversary may rely upon specific actions by a user in order to gain execution.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-40416Same product: Microsoft Edge Chromium
CVE-2026-42891Same product: Microsoft Edge Chromium
CVE-2026-33118Same product: Microsoft Edge Chromium
CVE-2025-47963Same product: Microsoft Edge Chromium
CVE-2024-30055Same product: Microsoft Edge Chromium
CVE-2025-21262Same product: Microsoft Edge Chromium
CVE-2025-47964Same product: Microsoft Edge Chromium
CVE-2025-29825Same product: Microsoft Edge Chromium
CVE-2026-45488Same product: Microsoft Edge Chromium
CVE-2026-0391Same product: Microsoft Edge Chromium

Affected Assets

microsoft
edge chromium
≤ 133.0.3065.51

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 1 hardening rule · 1 OS baseline
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

SA-8 Security and Privacy Engineering Principles partial match

Applying security engineering principles during design and implementation reduces the likelihood that UI logic will map user requests to incorrect operations.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require correct UI behavior matching user intent via design, requirements, and testing.

PR.AT-01 partial match
prevents

User awareness training helps people recognize and avoid harm from UI misrepresentation such as phishing, but does not prevent the flaw itself.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance validates that UI actions match user intent and requirements.

A.6.3 Information security awareness, education and training partial match
prevents

Security awareness training can teach users to recognize UI misrepresentation and phishing attempts.

A.8.23 Web filtering partial match
mitigates

Web filtering can block known phishing sites that exploit UI misrepresentation.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes UI/UX requirements and testing that directly prevent the interface from executing the wrong action.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly capture correct user-action mapping and expected behavior.

A.8.28 Secure coding partial match
prevents

Secure coding practices enforce correct control-flow and input-to-action mapping in the UI layer.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Ubuntu 22.04 (1 rule)
  • V-260539 Ubuntu 22.04 LTS must disable the x86 Ctrl-Alt-Delete key sequence if a graphical user interface is installed. prevents CWE-449

References