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CVE-2017-16231

20
FAUCET Score

CVE-2017-16231 describes a crash overflow vulnerability in PCRE version 8.41, specifically within the match() function in pcre_exec.c, triggered by a self-recursive call during a pcretest load test. This vulnerability carries a CVSS score of 5.5 (MEDIUM), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. While a proof-of-concept exists, there is no evidence of active exploitation, publicly available exploit code in common frameworks, or significant community discussion or media coverage, with third parties also noting potential mitigations.

Impacted Technologies

VendorProductVersion(s)CPE
8.41CPE matchmatch criteria
cpe:2.3:a:pcre:pcre:8.41:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 93rd percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 Advisories (1)

redhatCVE-2017-16231

pcre: self-recursive call in match() in pcre_exec.c leads to denial of service

Nov 1, 2017

References

packetstormsecurity.com / files/150897/PCRE-8.41-Buffer-Overflow.html
Third Party AdvisoryVDB Entry
bugs.exim.org / show_bug.cgi
Issue TrackingThird Party Advisory
seclists.org / fulldisclosure/2018/Dec/33
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2017/11/01/11
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2017/11/01/3
ExploitMailing ListThird Party Advisory
openwall.com / lists/oss-security/2017/11/01/7
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2017/11/01/8
ExploitMailing ListThird Party Advisory
securityfocus.com / bid/101688
Third Party AdvisoryVDB Entry