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CVE-2007-1660

19
FAUCET Score

CVE-2007-1660 describes a buffer overflow vulnerability in the Perl-Compatible Regular Expression (PCRE) library prior to version 7.0, impacting applications utilizing this library. The flaw stems from improper size calculations for character classes, which can be triggered by context-dependent attackers. With a CVSS score of 6.8, this medium-complexity vulnerability allows for denial of service and potentially arbitrary code execution. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.9CPE matchmatch criteria
cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.08%
Probability of exploitation in next 30 days
EPSS Percentile
89.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0408 is in the 86th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: pcre-0:3.4-2.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: php-0:4.1.2-2.20
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: pcre-0:3.9-10.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: pcre-0:4.5-4.el4_5.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: pcre-0:6.6-2.el5_0.1
View patch

Vendor Advisories (1)

redhatCVE-2007-1660Important

pcre regular expression flaws

Nov 5, 2007

References

bugs.gentoo.org / show_bug.cgi
docs.info.apple.com / article.html
docs.info.apple.com / article.html
lists.apple.com / archives/security-announce/2007/Dec/msg00002.html
lists.apple.com / archives/security-announce/2008/Mar/msg00001.html
lists.opensuse.org / opensuse-security-announce/2008-01/msg00006.html
lists.vmware.com / pipermail/security-announce/2008/000014.html
mail.gnome.org / archives/gtk-devel-list/2007-November/msg00022.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/27538
Vendor Advisory
secunia.com / advisories/27543
Vendor Advisory
secunia.com / advisories/27547
Vendor Advisory
secunia.com / advisories/27554
Vendor Advisory
secunia.com / advisories/27598
Vendor Advisory
secunia.com / advisories/27697
Vendor Advisory
secunia.com / advisories/27741
Vendor Advisory
secunia.com / advisories/27773
Vendor Advisory
secunia.com / advisories/27776
Vendor Advisory
secunia.com / advisories/27862
Vendor Advisory
secunia.com / advisories/27965
Vendor Advisory
secunia.com / advisories/28136
Vendor Advisory
secunia.com / advisories/28406
Vendor Advisory
secunia.com / advisories/28414
Vendor Advisory
secunia.com / advisories/28658
Vendor Advisory
secunia.com / advisories/28714
Vendor Advisory
secunia.com / advisories/28720
Vendor Advisory
secunia.com / advisories/29420
Vendor Advisory
secunia.com / advisories/29785
Vendor Advisory
secunia.com / advisories/30106
secunia.com / advisories/30155
secunia.com / advisories/30219
secunia.com / advisories/31124
security.gentoo.org / glsa/glsa-200711-30.xml
security.gentoo.org / glsa/glsa-200801-02.xml
security.gentoo.org / glsa/glsa-200801-18.xml
security.gentoo.org / glsa/glsa-200801-19.xml
security.gentoo.org / glsa/glsa-200805-11.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/38273
issues.rpath.com / browse/RPL-1738
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10562
support.avaya.com / elmodocs2/security/ASA-2007-488.htm
usn.ubuntu.com / 547-1
debian.org / security/2007/dsa-1399
Patch
debian.org / security/2008/dsa-1570
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_25_sr.html
novell.com / linux/security/advisories/2007_62_pcre.html
redhat.com / support/errata/RHSA-2007-0967.html
redhat.com / support/errata/RHSA-2007-0968.html
redhat.com / support/errata/RHSA-2007-1063.html
redhat.com / support/errata/RHSA-2007-1065.html
redhat.com / support/errata/RHSA-2008-0546.html
securityfocus.com / archive/1/483357/100/0/threaded
securityfocus.com / archive/1/483579/100/0/threaded
securityfocus.com / archive/1/490917/100/0/threaded
securityfocus.com / bid/26346
Patch
us-cert.gov / cas/techalerts/TA07-352A.html
US Government Resource
vupen.com / english/advisories/2007/3725
vupen.com / english/advisories/2007/3790
vupen.com / english/advisories/2007/4238
vupen.com / english/advisories/2008/0924/references
vupen.com / english/advisories/2008/1234/references