VULNERABILITY INTELLIGENCE
CVE-2007-1661
CVSS score6.4 MEDIUM
EPSS probability2.49%
CISA KEVNot currently listed
Published2007-11-07
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:P
Description
Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the "\X?\d" and "\P{L}?\d" patterns.
Primary references
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Vendor Advisory