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Fencer Vulns
medium 6.8

CVE-2007-4768 json

Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute ar…

published 2007-11-07 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4749

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

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.

Patch / fix

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

debian advisories DEBIAN-CVE-2007-4768

  • flash-plugin RHEL 3 EXTRAS 9.0.115.0-1.el3.with.oss
  • flash-plugin RHEL 4 EXTRAS 9.0.115.0-1.el4
  • flash-plugin RHEL 5 EXTRAS 9.0.115.0-1.el5

red hat advisories RHSA-2007:1126

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-2007-4768 updated

: pcre before 7.3 incorrect unicode in char class optimization

  • Red Hat Desktop version 3 Extras flash-plugin 9.0.115.0-1.el3.with.oss Red Hat Desktop version 4 Extras flash-plugin 9.0.115.0-1.el4 Red Hat Enterprise Linux AS version 3 Extras flash-plugin 9.0.115.0-1.el3.with.oss Red Hat Enterprise Linux AS version 4 Extras flash-plugin 9.0.115.0-1.el4 Red Hat Enterprise Linux Desktop Supplementary (v. 5) flash-plugin 9.0.115.0-1.el5 Red Hat Enterprise Linux ES version 3 Extras flash-plugin 9.0.115.0-1.el3.with.oss
    +4 more products
    Red Hat Enterprise Linux ES version 4 Extras flash-plugin 9.0.115.0-1.el4 Red Hat Enterprise Linux Server Supplementary (v. 5) flash-plugin 9.0.115.0-1.el5 Red Hat Enterprise Linux WS version 3 Extras flash-plugin 9.0.115.0-1.el3.with.oss Red Hat Enterprise Linux WS version 4 Extras flash-plugin 9.0.115.0-1.el4
    fixed: vendor fix RHSA-2007:1126

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

4.10% 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.