CVE-2007-4727
MEDIUMEPSS 96th pctlDescription
Buffer overflow in the fcgi_env_add function in mod_proxy_backend_fastcgi.c in the mod_fastcgi extension in lighttpd before 1.4.18 allows remote attackers to overwrite arbitrary CGI variables and execute arbitrary code via an HTTP request with a long content length, as demonstrated by overwriting the SCRIPT_FILENAME variable, aka a "header overflow."
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 96% of all known CVEs.
References
- http://fedoranews.org/updates/FEDORA-2007-213.shtml
- http://secunia.com/advisories/26732
- http://secunia.com/advisories/26794
- http://secunia.com/advisories/26824
- http://secunia.com/advisories/26997
- http://secunia.com/advisories/27229
- http://securityreason.com/securityalert/3127
- http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/
- http://trac.lighttpd.net/trac/changeset/1986
- http://www.gentoo.org/security/en/glsa/glsa-200709-16.xml
- http://www.lighttpd.net/assets/2007/9/9/lighttpd_sa_2007_12.txt
- http://www.novell.com/linux/security/advisories/2007_20_sr.html
- http://www.securityfocus.com/archive/1/479763/100/0/threaded
- http://www.securityfocus.com/bid/25622
- http://www.vupen.com/english/advisories/2007/3110
- https://bugzilla.redhat.com/show_bug.cgi?id=284511
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36526
- https://issues.rpath.com/browse/RPL-1715
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.