CVE-2015-8386: fedoraproject fedora
Vulnerability summary
CVE-2015-8386 is a critical (CVSS 9.8) vulnerability in fedoraproject fedora. EPSS estimates a 6.87% chance of exploitation in the next 30 days, higher than 94% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 7% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 3Timeline
- 02-12-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, 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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
6.87%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
No change 0.00 pp
From 6.87% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- pcre3< 2:8.38-1
Fedoraproject1 product
- fedoraEOL22
Oracle1 product
- linuxEOL7
Pcre1 product
Php1 product
- php≥ 5.5.0, < 5.5.32 | ≥ 5.6.0, < 5.6.18 | ≥ 7.0.0, < 7.0.3
Ubuntu1 product
- pcre3< 1:8.31-2ubuntu2.2
6 vendors · 6 products
References
17 links- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
- www-01.ibm.com/support/docview.wss?uid=isg3T1023886Third Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.htmlVendor AdvisoryThird Party Advisory
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731Third Party Advisory
- bto.bluecoat.com/security-advisory/sa128Third Party Advisory
