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Vulnerability record · CVE-2017-7186 · published 20 March 2017

CVE-2017-7186: Pcre memory buffer overflow vulnerability

Pcre · Pcre

libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.

7.5 CVSS 3.0 High EPSS 5.0% · top 8.0% CWE-119 · Memory buffer overflow
7.5CVSS 3.0 base score, v2 5.0
5.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/97030
https://access.redhat.com/errata/RHSA-2018:2486
https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/ PatchThird Party Advisory
https://bugs.exim.org/show_bug.cgi?id=2052 Third Party Advisory
https://security.gentoo.org/glsa/201710-09
https://security.gentoo.org/glsa/201710-25
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date Patch
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date Patch
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date Patch
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date Patch
http://www.securityfocus.com/bid/97030
https://access.redhat.com/errata/RHSA-2018:2486
https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/ PatchThird Party Advisory
https://bugs.exim.org/show_bug.cgi?id=2052 Third Party Advisory
https://security.gentoo.org/glsa/201710-09
https://security.gentoo.org/glsa/201710-25
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date Patch
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date Patch
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date Patch
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date Patch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-7186), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.