CVE-2025-62689

Name	CVE-2025-62689
Description	NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2 tag. A specially crafted packet sent by an attacker could cause a denial-of-service (DoS) condition.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libmicrohttpd (PTS)	bullseye	0.9.72-2+deb11u1	vulnerable
	bookworm	0.9.75-6	vulnerable
	trixie	1.0.1-4	vulnerable
	forky, sid	1.0.2-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libmicrohttpd	source	(unstable)	(unfixed)	unimportant

Notes

Fixed by: https://git.gnunet.org/libmicrohttpd.git/commit/?id=ff13abc1c1d7d2b30d69d5c0bd4a237e1801c50b
Vulnerable code only compiled when HAVE_EXPERIMENTAL flag is set