CVE-2011-1895

Forefront Unified Access Gateway vulnerability

CVSS

4.3

EPSS

11.1%

EPSS pct

95th

Exploited

No known

CRLF injection vulnerability in Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 allows remote attackers to inject arbitrary HTTP headers, and conduct HTTP response splitting attacks and cross-site scripting (XSS) attacks, via unspecified vectors, aka "ExcelTable Response Splitting XSS Vulnerability."

Affected vendor

Microsoft

Affected product

Forefront Unified Access Gateway

CVSS vector

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

Weakness type (CWE)

CWE-94 — Code Injection

Published

2011-10-12

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 11.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2011-1895

Confirm whether Microsoft Forefront Unified Access Gateway is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-1895.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-1895

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-1895 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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