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Fencer Intel
high 7.5

CVE-2017-7186 json

libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read acce…

published 2017-03-20 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16224

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • pcre2 Debian 14, Debian 13, Debian 12 10.22-3
  • pcre3 Debian 12 2:8.39-3

debian advisories DEBIAN-CVE-2017-7186

  • pcre3 Ubuntu Pro 16.04 LTS 2:8.38-3.1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2017-7186

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pcre SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 8.45-8.7.1
  • selinux-policy SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 20140730-36.5.2

suse advisories SUSE-SU-2021:3652-1

  • pcre Alpine 3.24, Alpine 3.23, Alpine 3.22 +16 more 8.40-r2

alpine advisories ALPINE-CVE-2017-7186

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pcre Arch Linux 8.41-1
  • pcre2 Arch Linux 10.30-1

arch linux advisories AVG-222AVG-223

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7186 updated cvss 7.5

pcre: Invalid Unicode property lookup (8.41/7, 10.24/2)

  • Red Hat Enterprise Linux 7 pcre, pcre-tools Red Hat JBoss Enterprise Web Server 1 httpd Red Hat JBoss Enterprise Web Server 2 jbcs-httpd24, jbcs-httpd24-runtime Red Hat JBoss Enterprise Web Server 3 httpd
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2018:2486
  • Red Hat Directory Server 8 pcre Red Hat Enterprise Linux 5 pcre Red Hat Enterprise Linux 6 pcre, glib2 Red Hat Enterprise Linux 7 glib2, pcre2, glib2-fam, glib2-tests, pcre2-tools, pcre2-utf16, +3 more Red Hat JBoss Web Server 3 pcre Red Hat Software Collections rh-php56-php, rh-php70-php, rh-php56-php-gd, rh-php70-php-gd, rh-php56-php-cli, rh-php56-php-dba, +69 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.03% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.