Skip to content
Fencer Vulns
medium 6.8

CVE-2007-1660 json

Perl-Compatible Regular Expression (PCRE) library before 7.0 does not properly calculate sizes for unspecified "multiple forms of character…

published 2007-11-07 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1654

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Perl-Compatible Regular Expression (PCRE) library before 7.0 does not properly calculate sizes for unspecified "multiple forms of character class", which triggers a buffer overflow that allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code.

Patch / fix

  • pcre3 Debian 12 7.3-1
  • glib2.0 Debian 14, Debian 13, Debian 12 2.14.3-1

debian advisories DEBIAN-CVE-2007-1660

  • php RHEL 2.1 4.1.2-2.20
  • php-imap RHEL 2.1 4.1.2-2.20
  • php-ldap RHEL 2.1 4.1.2-2.20
  • php-odbc RHEL 2.1 4.1.2-2.20
  • php-mysql RHEL 2.1 4.1.2-2.20
  • php-pgsql RHEL 2.1 4.1.2-2.20
  • php-manual RHEL 2.1 4.1.2-2.20
  • pcre RHEL 2.1 3.4-2.4

red hat advisories RHSA-2008:0546RHSA-2007:1065RHSA-2007:1063RHSA-2007:0968RHSA-2007:0967

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-1660 updated

pcre regular expression flaws

  • Red Hat Desktop version 3 pcre 3.9-10.4
    fixed: vendor fix RHSA-2007:1063
  • Red Hat Enterprise Linux (v. 5 server) pcre 6.6-2.el5_0.1
    fixed: vendor fix RHSA-2007:0967
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 pcre 3.4-2.4, php 4.1.2-2.20, php-imap 4.1.2-2.20, php-ldap 4.1.2-2.20, php-odbc 4.1.2-2.20, php-mysql 4.1.2-2.20, +2 more
    fixed: vendor fix RHSA-2007:1065
  • Red Hat Enterprise Linux AS version 3 pcre 3.9-10.4
    fixed: vendor fix RHSA-2007:1063
  • Red Hat Enterprise Linux AS version 4 pcre 4.5-4.el4_5.1
    fixed: vendor fix RHSA-2007:0968
  • Red Hat Enterprise Linux Desktop (v. 5 client) pcre 6.6-2.el5_0.1
    fixed: vendor fix RHSA-2007:0967
  • Red Hat Enterprise Linux Desktop version 4 pcre 4.5-4.el4_5.1
    fixed: vendor fix RHSA-2007:0968
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) pcre 6.6-2.el5_0.1
    fixed: vendor fix RHSA-2007:0967
show 7 more
  • Red Hat Enterprise Linux ES version 2.1 pcre 3.4-2.4, php 4.1.2-2.20, php-imap 4.1.2-2.20, php-ldap 4.1.2-2.20, php-odbc 4.1.2-2.20, php-mysql 4.1.2-2.20, +2 more
    fixed: vendor fix RHSA-2007:1065
  • Red Hat Enterprise Linux ES version 3 pcre 3.9-10.4
    fixed: vendor fix RHSA-2007:1063
  • Red Hat Enterprise Linux ES version 4 pcre 4.5-4.el4_5.1
    fixed: vendor fix RHSA-2007:0968
  • Red Hat Enterprise Linux WS version 2.1 pcre 3.4-2.4, php 4.1.2-2.20, php-imap 4.1.2-2.20, php-ldap 4.1.2-2.20, php-odbc 4.1.2-2.20, php-mysql 4.1.2-2.20, +2 more
    fixed: vendor fix RHSA-2007:1065
  • Red Hat Enterprise Linux WS version 3 pcre 3.9-10.4
    fixed: vendor fix RHSA-2007:1063
  • Red Hat Enterprise Linux WS version 4 pcre 4.5-4.el4_5.1
    fixed: vendor fix RHSA-2007:0968
  • Red Hat Linux Advanced Workstation 2.1 pcre 3.4-2.4, php 4.1.2-2.20, php-imap 4.1.2-2.20, php-ldap 4.1.2-2.20, php-odbc 4.1.2-2.20, php-mysql 4.1.2-2.20, +2 more
    fixed: vendor fix RHSA-2007:1065

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.08% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.