MEDIUM
pcre regular expression flaws
Published Nov 7, 2007
6.8
MEDIUMCVSS 2.0
EPSS 4.08%
Description
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 2.1
pcre-0:3.4-2.4
Fixed · RHSA-2007:1065
Red Hat Enterprise Linux 2.1
php-0:4.1.2-2.20
Fixed · RHSA-2008:0546
Red Hat Enterprise Linux 3
pcre-0:3.9-10.4
Fixed · RHSA-2007:1063
Red Hat Enterprise Linux 4
pcre-0:4.5-4.el4_5.1
Fixed · RHSA-2007:0968
Red Hat Enterprise Linux 5
pcre-0:6.6-2.el5_0.1
Fixed · RHSA-2007:0967
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 2.1 | pcre-0:3.4-2.4 | Fixed | RHSA-2007:1065 |
| Red Hat Enterprise Linux 2.1 | php-0:4.1.2-2.20 | Fixed | RHSA-2008:0546 |
| Red Hat Enterprise Linux 3 | pcre-0:3.9-10.4 | Fixed | RHSA-2007:1063 |
| Red Hat Enterprise Linux 4 | pcre-0:4.5-4.el4_5.1 | Fixed | RHSA-2007:0968 |
| Red Hat Enterprise Linux 5 | pcre-0:6.6-2.el5_0.1 | Fixed | RHSA-2007:0967 |
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.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.08% 0.04077
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.04077
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.08% (0.04077) | 90.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.08% (0.04077) | 89.35th | v5 (v2026.06.15) |
| Mar 30, 2025 | 5.63% (0.05628) | 89.39th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.29% (0.09288) | 87.78th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.63% (0.05628) | 89.66th | v4 (v2025.03.14) |
| Feb 10, 2025 | 12.45% (0.12453) | 95.47th | v3 (v2023.03.01) |
| Dec 17, 2024 | 15.02% (0.15020) | 95.81th | v3 (v2023.03.01) |
| Dec 12, 2024 | 4.91% (0.04909) | 93.09th | v3 (v2023.03.01) |
| Jun 26, 2024 | 3.94% (0.03936) | 92.07th | v3 (v2023.03.01) |
| Apr 10, 2024 | 3.92% (0.03921) | 91.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.86% (0.03862) | 90.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.23% (0.04229) | 87.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.23% (0.04229) | 86.19th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.23% (0.04229) | 69.94th | v2 (v2022.01.01) |
Weaknesses (1)
References (68)
- http://bugs.gentoo.org/show_bug.cgi?id=198976 x_refsource_MISC
- http://docs.info.apple.com/article.html?artnum=307179 x_refsource_CONFIRM
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- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html vendor-advisoryx_refsource_SUSE
- http://lists.vmware.com/pipermail/security-announce/2008/000014.html mailing-listx_refsource_MLIST
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- http://secunia.com/advisories/29420 third-party-advisoryx_refsource_SECUNIAVendor Advisory
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- http://secunia.com/advisories/30106 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/30155 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/30219 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/31124 third-party-advisoryx_refsource_SECUNIA
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- http://security.gentoo.org/glsa/glsa-200801-18.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200801-19.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200805-11.xml vendor-advisoryx_refsource_GENTOO
- http://securitytracker.com/id?1018895 vdb-entryx_refsource_SECTRACK
- http://support.avaya.com/elmodocs2/security/ASA-2007-488.htm x_refsource_CONFIRM
- http://www.debian.org/security/2007/dsa-1399 vendor-advisoryx_refsource_DEBIANPatch
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- http://www.novell.com/linux/security/advisories/2007_25_sr.html vendor-advisoryx_refsource_SUSE
- http://www.novell.com/linux/security/advisories/2007_62_pcre.html vendor-advisoryx_refsource_SUSE
- http://www.redhat.com/support/errata/RHSA-2007-0967.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2007-0968.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2007-1063.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2007-1065.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2008-0546.html vendor-advisoryx_refsource_REDHAT
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- http://www.securityfocus.com/archive/1/490917/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/26346 vdb-entryx_refsource_BIDPatch
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- https://access.redhat.com/security/cve/CVE-2007-1660 Vendor Advisory
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- https://exchange.xforce.ibmcloud.com/vulnerabilities/38273 vdb-entryx_refsource_XF
- https://issues.rpath.com/browse/RPL-1738 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2007-1660
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10562 vdb-entrysignaturex_refsource_OVAL
- https://usn.ubuntu.com/547-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2007-1660
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 7, 2007
Updated Aug 7, 2024
Reserved Mar 24, 2007
Link CVE-2007-1660
CISA Vulnrichment
Updated n/a