CVE-2017-7186

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.

• CWE-119

• 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/Patch, Third Party Advisory
• https://bugs.exim.org/show_bug.cgi?id=2052Third 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=datePatch
• https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=datePatch
• https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=datePatch
• https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=datePatch
• 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/Patch, Third Party Advisory
• https://bugs.exim.org/show_bug.cgi?id=2052Third 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=datePatch
• https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=datePatch
• https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=datePatch
• https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=datePatch

Published

Mar 20, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2017-7177Suricata before 3.2.1 has an IPv4 defragmentation evasion is…
• CVE-2017-7178CSRF was discovered in the web UI in Deluge before 1.3.14. T…8.8
• CVE-2017-7180Net Monitor for Employees Pro through 5.3.4 has an unquoted …7.3
• CVE-2017-7183The TFTP server in ExtraPuTTY 0.30 and earlier allows remote…
• CVE-2017-7184The xfrm_replay_verify_len function in net/xfrm/xfrm_user.c …7.8
• CVE-2017-7185Use-after-free vulnerability in the mg_http_multipart_wait_f…
• CVE-2017-7187The sg_ioctl function in drivers/scsi/sg.c in the Linux kern…7.8
• CVE-2017-7188Zurmo 3.1.1 Stable allows a Cross-Site Scripting (XSS) attac…5.4
• CVE-2017-7189main/streams/xp_socket.c in PHP 7.x before 2017-03-07 mispar…
• CVE-2017-7191The netjoin processing in Irssi 1.x before 1.0.2 allows atta…
• CVE-2017-7192WebSocket.swift in Starscream before 2.0.4 allows an SSL Pin…
• CVE-2017-7199Nessus 6.6.2 - 6.10.3 contains a flaw related to insecure pe…