CVE-2015-3210

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 9%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote attackers to execute arbitrary code via a crafted regular expression, as demonstrated by /^(?P=B)((?P=B)(?J:(?Pc)(?Pa(?P=B)))>WGXCREDITS)/, a different vulnerability than CVE-2015-8384.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation9% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
9%
EPSS %ILE
95%
KEV
Not listed

Published

December 13, 2016

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Aug 18, 2026
Patch available. Sources: redhat.
generic

CVE-2015-3210 - PSIRT.COM

http://www.securityfocus.com/bid/74934
generic

oss-security - Re: Heap Overflow in PCRE

http://www.openwall.com/lists/oss-security/2015/12/02/11
generic

oss-security - CVE-2015-3210: PCRE Library Heap Overflow Vulnerability

http://www.openwall.com/lists/oss-security/2015/06/01/7
generic
http://rhn.redhat.com/errata/RHSA-2016-2750.html
generic

Exim Internet Mailer

https://bugs.exim.org/show_bug.cgi?id=1636
redhat Patch Available
https://access.redhat.com/errata/RHSA-2016:1132

Vendor Advisories for CVE-2015-3210(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibpcre3 (2:8.35-7.1ubuntu1.3) @ wily2026-05-20ubuntu
ubuntulibpcre3 (8.12-4ubuntu0.1) @ precise2026-05-20ubuntu
redhatrh-php56-php-pear-1:1.9.5-4.el72016-11-15redhat
redhatrh-mariadb100-mariadb-1:10.0.25-4.el72016-05-26redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pcre3—2:8.35-7.2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pcre3—2:8.35-7.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 132 total refreshes for this CVE.

  1. 2026-08-21 23:44 UTCEPSS rescore
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  24. 2026-07-23 01:17 UTCEG score recompute
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  1. 2026-07-22 21:58 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2015-3210?
CVE-2015-3210 is a critical vulnerability published on December 13, 2016. Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote attackers to execute arbitrary code via a crafted regular expression, as demonstrated by /^(?P=B)((?P=B)(?J:(?P<B>c)(?P<B>a(?P=B)))>WGXCREDITS)/, a different vulnerability than CVE-2015-8384.
When was CVE-2015-3210 disclosed?
CVE-2015-3210 was first published in the National Vulnerability Database on December 13, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3210 actively exploited?
CVE-2015-3210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9% probability of exploitation in the next 30 days, which ranks it in the top 5.1% of all scored CVEs.
What is the CVSS score of CVE-2015-3210?
CVE-2015-3210 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-3210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3210, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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