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CVE-2015-8380

25
FAUCET Score

CVE-2015-8380 describes a heap-based buffer overflow vulnerability in the pcre_exec function of PCRE before version 8.38, affecting products like Fedora. This flaw allows remote attackers to trigger a denial of service or potentially other impacts through a crafted regular expression, such as a JavaScript RegExp object. With a CVSS score of 7.5, it is considered highly severe due to its network attack vector, low access complexity, and potential for partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.37CPE matchmatch criteria
cpe:2.3:a:pcre:perl_compatible_regular_expression_library:*:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.44%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0444 is in the 83rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: pcre
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: pcre

Vendor Advisories (1)

redhatCVE-2015-8380

pcre: OOB write when pcre_exec() is called with ovecsize of 1 (8.38/10)

Jun 1, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-December/173700.html
Third Party Advisory
blog.fuzzing-project.org / 29-Heap-Overflow-in-PCRE.html
Third Party Advisory
bto.bluecoat.com / security-advisory/sa128
Third Party Advisory
bugs.exim.org / show_bug.cgi
Exploit
security.gentoo.org / glsa/201607-02
vcs.pcre.org / pcre/code/trunk/ChangeLog
Exploit
openwall.com / lists/oss-security/2015/11/29/1
Exploit
securityfocus.com / bid/77695
Third Party AdvisoryVDB Entry