CVE-2026-21264: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft Account
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account allows an unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-21264) in Microsoft Account involves improper neutralization of input during web page generation, classified as CWE-79 (Cross-site Scripting). It enables an attacker without privileges to execute spoofing attacks remotely, affecting confidentiality and integrity with no impact on availability. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and high impact on confidentiality and integrity. A patch is available to remediate this vulnerability.
Potential Impact
Successful exploitation can lead to spoofing attacks that compromise user confidentiality and data integrity within Microsoft Account services. The vulnerability does not affect system availability. No known exploits have been reported in the wild so far.
Mitigation Recommendations
A patch is available for this vulnerability and should be applied promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the vendor's fix. No additional mitigations are specified.
CVE-2026-21264: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft Account
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account allows an unauthorized attacker to perform spoofing over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21264) in Microsoft Account involves improper neutralization of input during web page generation, classified as CWE-79 (Cross-site Scripting). It enables an attacker without privileges to execute spoofing attacks remotely, affecting confidentiality and integrity with no impact on availability. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and high impact on confidentiality and integrity. A patch is available to remediate this vulnerability.
Potential Impact
Successful exploitation can lead to spoofing attacks that compromise user confidentiality and data integrity within Microsoft Account services. The vulnerability does not affect system availability. No known exploits have been reported in the wild so far.
Mitigation Recommendations
A patch is available for this vulnerability and should be applied promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the vendor's fix. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-11T21:02:05.738Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6972ad5b4623b1157c962b9d
Added to database: 1/22/2026, 11:06:03 PM
Last enriched: 4/3/2026, 12:54:13 PM
Last updated: 5/10/2026, 2:10:10 AM
Views: 152
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