CVE-2012-0007

Anti Cross Site Scripting Library vulnerability

CVSS

4.3

EPSS

19.3%

EPSS pct

97th

Exploited

No known

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."

Affected vendor

Microsoft

Affected product

Anti Cross Site Scripting Library

CVSS vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2012-01-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 19.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2012-0007

Confirm whether Microsoft Anti Cross Site Scripting Library is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2012-0007.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2012-0007

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2012-0007 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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