pcre miscalculation of memory requirements for repeated subpattern containing a named recursion or subroutine reference
Published Dec 3, 2007
4.3
MEDIUMCVSS 2.0
EPSS 1.60%
Description
Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified "subpattern containing a named recursion or subroutine reference," which allows context-dependent attackers to cause a denial of service (error or crash).
Affected products
No data.
Configuration 1
- 4.0
Configuration 2
- 4.0
- 4.0
- 4.0
No data.
Red Hat Enterprise Linux 4
pcre-0:4.5-4.el4_6.6
Fixed · RHSA-2007:1068
Red Hat Enterprise Linux 5
pcre-0:6.6-2.el5_1.7
Fixed · RHSA-2007:1059
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | pcre-0:4.5-4.el4_6.6 | Fixed | RHSA-2007:1068 |
| Red Hat Enterprise Linux 5 | pcre-0:6.6-2.el5_1.7 | Fixed | RHSA-2007:1059 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.60% (0.01604) | 74.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.60% (0.01604) | 72.61th | v5 (v2026.06.15) |
| Mar 29, 2025 | 2.29% (0.02289) | 74.47th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.97% (0.00975) | 75.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 10.24% (0.10236) | 95.21th | v3 (v2023.03.01) |
| Nov 13, 2024 | 10.24% (0.10236) | 95.15th | v3 (v2023.03.01) |
| Oct 6, 2024 | 6.46% (0.06457) | 93.86th | v3 (v2023.03.01) |
| Aug 29, 2024 | 5.32% (0.05317) | 93.21th | v3 (v2023.03.01) |
| Jul 22, 2024 | 4.26% (0.04263) | 92.39th | v3 (v2023.03.01) |
| Jun 14, 2024 | 3.07% (0.03069) | 91.04th | v3 (v2023.03.01) |
| May 6, 2024 | 2.19% (0.02188) | 89.35th | v3 (v2023.03.01) |
| Dec 9, 2023 | 1.45% (0.01449) | 85.16th | v3 (v2023.03.01) |
| May 8, 2023 | 1.05% (0.01052) | 81.84th | v3 (v2023.03.01) |
| Apr 1, 2023 | 1.09% (0.01088) | 82.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.01% (0.01008) | 81.37th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.54% (0.01537) | 74.00th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
No CWE recorded.
References (15)
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/28041 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/28658 third-party-advisoryx_refsource_SECUNIA
- http://support.avaya.com/elmodocs2/security/ASA-2007-505.htm x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:030 vendor-advisoryx_refsource_MANDRIVA
- http://www.pcre.org/changelog.txt x_refsource_CONFIRM
- http://www.redhat.com/support/errata/RHSA-2007-1059.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2007-1068.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/26727 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2006-7226 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=384781 x_refsource_MISCIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/40020 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2006-7226
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11545 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2006-7226
Change history (0)
No recorded changes yet.