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CVE-2007-4727

23
FAUCET Score

CVE-2007-4727 describes a buffer overflow in the mod_fastcgi extension of lighttpd versions prior to 1.4.18. This flaw, specifically in the fcgi_env_add function, allows remote attackers to overwrite CGI variables, such as SCRIPT_FILENAME, by sending an HTTP request with an excessively long content length. With a CVSS score of 6.8, this vulnerability is of medium severity, requiring moderate attack complexity but potentially leading to partial confidentiality, integrity, and availability impacts through arbitrary code execution. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.15CPE matchmatch criteria
cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.90%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1290 is in the 96th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation records are not available for this CVE.

References

fedoranews.org / updates/FEDORA-2007-213.shtml
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/26732
Vendor Advisory
secunia.com / advisories/26794
secunia.com / advisories/26824
secunia.com / advisories/26997
secunia.com / advisories/27229
securityreason.com / securityalert/3127
secweb.se / en/advisories/lighttpd-fastcgi-remote-vulnerability
exchange.xforce.ibmcloud.com / vulnerabilities/36526
issues.rpath.com / browse/RPL-1715
trac.lighttpd.net / trac/changeset/1986
gentoo.org / security/en/glsa/glsa-200709-16.xml
lighttpd.net / assets/2007/9/9/lighttpd_sa_2007_12.txt
novell.com / linux/security/advisories/2007_20_sr.html
securityfocus.com / archive/1/479763/100/0/threaded
securityfocus.com / bid/25622
vupen.com / english/advisories/2007/3110