CVE-2012-0007

Microsoft Anti-Cross Site Scripting Library 3.x and 4.0 - Cross-Site Scripting via CSS Escaped Character Bypass

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2012-0007. PoCs published by Adi Cohen.

AI-analyzed exploit summary This exploit demonstrates a security-bypass vulnerability in the Microsoft Anti-Cross Site Scripting (AntiXSS) Library. It shows how an attacker can bypass the sanitization module to conduct cross-site scripting attacks by injecting malicious CSS expressions.

Description

The Microsoft Anti-Cross Site Scripting (AntiXSS) Library 3.x and 4.0 does not properly evaluate characters after the detection of a Cascading Style Sheets (CSS) escaped character, which allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML input, aka "AntiXSS Library Bypass Vulnerability."

Exploits (1)

exploitdb WORKING POC VERIFIED
by Adi Cohen · textremotewindows
https://www.exploit-db.com/exploits/36507

This exploit demonstrates a security-bypass vulnerability in the Microsoft Anti-Cross Site Scripting (AntiXSS) Library. It shows how an attacker can bypass the sanitization module to conduct cross-site scripting attacks by injecting malicious CSS expressions.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Anti-Cross Site Scripting Library 3.x and 4.0
No auth needed
Prerequisites: Access to a web application using the vulnerable AntiXSS Library
MITRE ATT&CK
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/51291
US Government Resource third-party-advisory x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA12-010A.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1026499
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14314
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/47483
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/47516

Scores

EPSS 0.1928
EPSS Percentile 97.0%

Details

CWE
CWE-79
Status published
Products (2)
microsoft/anti-cross_site_scripting_library 3.1
microsoft/anti-cross_site_scripting_library 4.0
Published Jan 10, 2012
Tracked Since Feb 18, 2026