CVE-2015-8384

PCRE before 8.38 mishandles the /(?J)(?'d'(?'d'\g{d}))/ pattern and related patterns with certain recursive back references, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, a related issue to CVE-2015-8392 and CVE-2015-8395.

Published: 2015-12-02 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8384 is rated Moderate Risk (57.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.19%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-8384

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-08-02 0.88% 1.19% +0.31%
2 2025-06-29 1.98% 0.88% -1.10%
3 2025-06-03 — 1.98% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8384

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-8384

OS Trackers for CVE-2015-8384

vendor priority summary link
debian not yet assigned CVE-2015-8384 not yet assigned priority: Debian including 1 source packages (pcre3), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. https://security-tracker.debian.org/tracker/CVE-2015-8384
gentoo normal CVE-2015-8384: 1 GLSA(s) (201607-02), 1 atom(s) (dev-libs/libpcre); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-8384
redhat high — https://access.redhat.com/security/cve/CVE-2015-8384
suse critical CVE-2015-8384 severity critical: SUSE including 35 source package names (0.9.1:libpcre1-8.39-7.1, 1.0.0:libpcre1-8.39-7.1, …), 156 product×package rows across 69 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (69 product lines)): Fixed 105, Known Not Affected 51. https://www.suse.com/security/cve/CVE-2015-8384/
ubuntu low CVE-2015-8384 low priority: Ubuntu including 2 source packages (pcre2, pcre3), 20 status rows across 10 suites (artful, bionic, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): not-affected 10, DNE 4, ignored 3, released 2, needs-triage 1. https://ubuntu.com/security/CVE-2015-8384

Affected software / configurations for CVE-2015-8384

Vendor Product Version Raw CPE
pcre perl_compatible_regular_expression_library <= 8.37 cpe:2.3:a:pcre:perl_compatible_regular_expression_library:*:*:*:*:*:*:*:*

References for CVE-2015-8384

cvelogic Threat Intelligence