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Vulnerability details: VCID-ywee-ghvk-pubu
Vulnerability ID VCID-ywee-ghvk-pubu
Aliases CVE-2017-7186
Summary Improper Restriction of Operations within the Bounds of a Memory Buffer libpcre1 in PCRE and libpcre2 in PCRE2 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-20 Improper Input Validation
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7186.json
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
epss 0.07102 https://api.first.org/data/v1/epss?cve=CVE-2017-7186
cvssv2 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-7186
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-7186
archlinux Medium https://security.archlinux.org/AVG-222
archlinux Medium https://security.archlinux.org/AVG-223
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:2486
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7186.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7186
https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/
https://bugs.exim.org/show_bug.cgi?id=2052
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7186
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date
http://www.securityfocus.com/bid/97030
1434504 https://bugzilla.redhat.com/show_bug.cgi?id=1434504
858230 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858230
858233 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858233
ASA-201707-20 https://security.archlinux.org/ASA-201707-20
ASA-201710-18 https://security.archlinux.org/ASA-201710-18
AVG-222 https://security.archlinux.org/AVG-222
AVG-223 https://security.archlinux.org/AVG-223
cpe:2.3:a:pcre:pcre2:10.23:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:pcre:pcre2:10.23:*:*:*:*:*:*:*
cpe:2.3:a:pcre:pcre:8.40:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:pcre:pcre:8.40:*:*:*:*:*:*:*
CVE-2017-7186 https://nvd.nist.gov/vuln/detail/CVE-2017-7186
GLSA-201710-09 https://security.gentoo.org/glsa/201710-09
GLSA-201710-25 https://security.gentoo.org/glsa/201710-25
USN-5665-1 https://usn.ubuntu.com/5665-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7186.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7186
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7186
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.91487
EPSS Score 0.07102
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:11.916320+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/pcre.symbols/CVE-2017-7186.yml 38.0.0