CVE-2011-5279

high

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.

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-5178

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

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

http://seclists.org/fulldisclosure/2014/Apr/108

http://seclists.org/fulldisclosure/2012/Apr/13

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

http://hi.baidu.com/yuange1975/item/b2cc7141c22108e91e19bc2e

Details

Source: Mitre, NVD

Published: 2014-04-23

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 8.2

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Severity: High

EPSS

EPSS: 0.1959