Is CVE-2015-8387 actively exploited?

CVE-2015-8387 has no public evidence of in-the-wild exploitation as of 2025-04-12.

What is the CVSS score for CVE-2015-8387?

CVE-2015-8387 has a CVSS score of 7.3 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

How do I patch CVE-2015-8387?

Patch guidance is available from pcre security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2015-8387.

Fix CVE-2015-8387 - HIGH | CVEDatabase.com

Q: Which products are affected by CVE-2015-8387?

5 products: pcre perl compatible regular expression library, fedoraproject fedora, php php, php php, php php.

Description

PCRE before 8.38 mishandles (?123) subroutine calls and related subroutine calls, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: low
Weaknesses: CWE-190 · Integer Overflow

Metadata

Primary Vendor: PCRE
Published: 12/2/2015
Last Modified: 4/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

pcre : perl_compatible_regular_expression_libraryfedoraproject : fedoraphp : phpphp : phpphp : php

Remediation Guidance

Executive Summary

Cite this page

CVE-2015-8387. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2015-8387

View on NIST NVD

CVE-2015-8387 vulnerability