HOMEVULNERABILITIESCVE-2015-2326
MEDIUM

CVE-2015-2326

CWE-125Published: January 14, 2020· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

NVD Source

Technical Analysis

CVE-2015-2326 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Vendors & Products

mariadb1 product(s)
mariadb
openSUSE1 product(s)
opensuse
pcre1 product(s)
pcre
PHP1 product(s)
php
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

All References (8)

https://bugs.exim.org/show_bug.cgi?id=1592Exploit · Issue Tracking · Permissions Required · Third Party Advisory
https://www.pcre.org/original/changelog.txtRelease Notes · Third Party Advisory
https://bugs.exim.org/show_bug.cgi?id=1592Exploit · Issue Tracking · Permissions Required · Third Party Advisory
https://www.pcre.org/original/changelog.txtRelease Notes · Third Party Advisory

Quick Facts

CVE IDCVE-2015-2326
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-125
CISA KEVNo
Affected4 vendor(s)
PublishedJan 14, 2020

Related CVEs (CWE-125)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2015-2326 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.