CVE-2007-4768

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-11-07 · updated 2026-06-16
Weakness: CWE-119

Description

Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute arbitrary code via a singleton Unicode sequence in a character class in a regex pattern, which is incorrectly optimized.

Affected products

Pcre: through 6.0; through 6.1; through 7.3

References

http://bugs.gentoo.org/show_bug.cgi?id=198976
http://docs.info.apple.com/article.html?artnum=307179
http://docs.info.apple.com/article.html?artnum=307562
http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html
http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00007.html
http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html
http://secunia.com/advisories/27538
http://secunia.com/advisories/27543
http://secunia.com/advisories/27554
http://secunia.com/advisories/27697
http://secunia.com/advisories/27741

Get alerted when CVE-2007-4768 or the next vulnerability affects your stack