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CVE-2011-1895

21
FAUCET Score

CVE-2011-1895 describes a CRLF injection vulnerability affecting Microsoft Forefront Unified Access Gateway (UAG) 2010 and its updates. This flaw allows remote attackers to inject arbitrary HTTP headers, leading to HTTP response splitting and cross-site scripting (XSS) attacks. With a CVSS score of 4.3, this vulnerability has a medium attack complexity and requires no authentication, but its impact is limited to partial integrity compromise. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting low current threat activity.

Impacted Technologies

VendorProductVersion(s)CPE
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:*:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:sp1:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:update1:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:forefront_unified_access_gateway:2010:update2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
11.14%
Probability of exploitation in next 30 days
EPSS Percentile
95.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.1114 is in the 95th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (4)

fuji_electricvendor investigatingvia llm_extracted
langgeniusvendor investigatingvia llm_extracted
lizardbytevendor investigatingvia llm_extracted
opensipsvendor investigatingvia llm_extracted

Vendor Advisories (4)

langgeniusllm-langgenius-513a32a79e22b12aMEDIUM

[R1] Microsoft Forefront Unified Access Gateway Multiple Vulnerabilities

Oct 11, 2011
lizardbytellm-lizardbyte-34c4a4be3f23f757MEDIUM

[R1] Microsoft Forefront Unified Access Gateway Multiple Vulnerabilities

Oct 11, 2011
opensipsllm-opensips-e8a630e93b910a07MEDIUM

[R1] Microsoft Forefront Unified Access Gateway Multiple Vulnerabilities

Oct 11, 2011
fuji_electricllm-fuji_electric-7f4d581fc01c1789MEDIUM

[R1] Microsoft Forefront Unified Access Gateway Multiple Vulnerabilities

Oct 11, 2011

References

osvdb.org / 76235
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-079
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13064
securityfocus.com / bid/49979