CVE-2015-5589

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. 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: 6%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

The phar_convert_to_other function in ext/phar/phar_object.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 does not validate a file pointer before a close operation, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via a crafted TAR archive that is mishandled in a Phar::convertToData call.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

May 16, 2016

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 23, 2026
No patch confirmed yet.
generic

[SECURITY] [DSA 3344-1] php5 security update

http://www.debian.org/security/2015/dsa-3344
generic

PHP: PHP 5 ChangeLog

http://php.net/ChangeLog-5.php
generic

oss-security - Re: CVE request: php - segmentation fault in Phar::convertToData; buffer overflow in phar_fix_filepath;

http://openwall.com/lists/oss-security/2015/07/18/1
generic

PHP :: Sec Bug #69958 :: Segfault in Phar::convertToData on invalid file

https://bugs.php.net/bug.php?id=69958
generic

CVE-2015-5589 - PSIRT.COM

http://www.securityfocus.com/bid/75974

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuphp5-fpm (5.6.4+dfsg-4ubuntu6.3) @ vivid2026-05-20ubuntu
redhatrh-php56-php-0:5.6.5-8.el72016-03-15redhat

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

(3 across 3 ecosystems)
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
php55.3.3-7 ... 5.3.3.1-7+squeeze26 (23 versions)5.3.3.1-7+squeeze27—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
php55.4.11-1 ... 5.4.9-4 (34 versions)5.4.44-0+deb7u1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
php55.6.11+dfsg-1, 5.6.7+dfsg-1, 5.6.9+dfsg-0+deb8u1, 5.6.9+dfsg-15.6.12+dfsg-0+deb8u1—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 18× 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 154 total refreshes for this CVE.

  1. 2026-09-23 13:41 UTCEPSS rescore
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  19. 2026-07-23 01:18 UTCEG score recompute
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  21. 2026-07-22 21:59 UTCEG score recompute
  22. 2026-07-22 14:04 UTCEPSS rescore
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  75. 2026-06-13 22:57 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2015-5589?
CVE-2015-5589 is a critical vulnerability published on May 16, 2016. The pharconverttoother function in ext/phar/pharobject.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 does not validate a file pointer before a close operation, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other…
When was CVE-2015-5589 disclosed?
CVE-2015-5589 was first published in the National Vulnerability Database on May 16, 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-2015-5589 actively exploited?
CVE-2015-5589 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 6.7% of all scored CVEs.
What is the CVSS score of CVE-2015-5589?
CVE-2015-5589 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-5589?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-5589, 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.

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