CVE-2007-4727 Memory corruption in n/a

What is CVE-2007-4727?

CVE-2007-4727 is a medium-severity memory corruption vulnerability in n/a, published on 12 Sep 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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."

Weakness: CWE-119

Which versions are affected by CVE-2007-4727?

It affects 1 product.

Products include Lighttpd Lighttpd.

How do I fix CVE-2007-4727?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2007-4727 being exploited?

There is no known exploitation of CVE-2007-4727 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2019-11072 Integer overflow in n/a Critical 9.8
• CVE-2007-3949 Security feature bypass in n/a High 8.3
• CVE-2007-1870 Null dereference in n/a High 7.8
• CVE-2022-30780 Denial of service in n/a High 7.5
• CVE-2025-12642 HTTP Header Smuggling via Trailer Merge Medium 6.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2007-4727, GHSA-8fr6-p7rj-wmfr.