CVE Tools

CVE-2011-5279

Published: Apr 23, 2014Updated: May 6, 2026 Sources: CVE List NVDNVD-CWE-Other

No Fix Available

Description

CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.

CVSS Vector Breakdown

Exploitability

AV:NAccess Vector

Network

AC:LAccess Complexity

Low

Au:NAuthentication

None

Impact

C:NConfidentiality

None

I:PIntegrity

Partial

A:NAvailability

None

Open in CVSS calculator →

Weaknesses

Affected Products

internet information services microsoft

On-premWeb App

Web & CMS Plugins / cms-core

microsoftcommercialUSOperating Systems

Exploitability

5 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

References

http://seclists.org/fulldisclosure/2014/Apr/247

http://seclists.org/fulldisclosure/2014/Apr/128

http://seclists.org/fulldisclosure/2012/Apr/0

and 3 more references View all →

Timeline

Published

Apr 23, 2014

Last Updated

May 6, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2011-5279 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows