CVE-2009-4491

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-01-13 · updated 2026-06-16
Weakness: CWE-20

Description

thttpd 2.25b0 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

Affected products

thttpd: 2.25-b

References

http://packetstormsecurity.com/files/175949/m-privacy-TightGate-Pro-Code-Execution-Insecure-Permissions.html
http://seclists.org/fulldisclosure/2023/Nov/13
http://www.securityfocus.com/archive/1/508830/100/0/threaded
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
http://packetstormsecurity.com/files/175949/m-privacy-TightGate-Pro-Code-Execution-Insecure-Permissions.html
http://seclists.org/fulldisclosure/2023/Nov/13
http://www.securityfocus.com/archive/1/508830/100/0/threaded
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt

Get alerted when CVE-2009-4491 or the next vulnerability affects your stack