CVE-2015-7804

MEDIUMCVSS v2 · 6.86.8—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 6.8 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 8.8% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 9%CVSS v2: 6.8Exploit: None knownExposed: 0

A fix is available — apply it.

Off-by-one error in the phar_parse_zipfile function in ext/phar/zip.c in PHP before 5.5.30 and 5.6.x before 5.6.14 allows remote attackers to cause a denial of service (uninitialized pointer dereference and application crash) by including the / filename in a .zip PHAR archive.

CVSS v2.0 (legacy)
6.8MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
6.8(low)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity68% × 45%
Exploitation9% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
9%
EPSS %ILE
95%
KEV
Not listed

Published

December 11, 2015

Last Modified

May 6, 2026

References (24)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuphp5-xsl (5.5.9+dfsg-1ubuntu4.14) @ trusty2026-05-22ubuntu
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+squeeze27 (24 versions)5.3.3.1-7+squeeze28—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
php55.4.11-1 ... 5.4.9-4 (36 versions)5.4.45-0+deb7u2—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
php55.6.11+dfsg-1 ... 5.6.9+dfsg-1 (9 versions)5.6.14+dfsg-0+deb8u1—

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 6× in last 7d / 24× 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 120 total refreshes for this CVE.

  1. 2026-08-21 23:44 UTCEPSS rescore
  2. 2026-08-20 22:50 UTCEPSS rescore
  3. 2026-08-19 16:59 UTCEPSS rescore
  4. 2026-08-18 13:43 UTCEPSS rescore
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  20. 2026-07-28 15:31 UTCEPSS rescore
  21. 2026-07-26 13:55 UTCEG score recompute▲ 6.80
  22. 2026-07-25 14:13 UTCEPSS rescore
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  24. 2026-07-23 14:14 UTCEPSS rescore
  25. 2026-07-23 01:19 UTCEG score recompute
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  1. 2026-07-23 00:21 UTCEG score recompute
  2. 2026-07-22 21:59 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
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  20. 2026-07-09 19:05 UTCEPSS rescore
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  22. 2026-07-08 15:10 UTCEPSS rescore
  23. 2026-07-07 13:42 UTCEPSS rescore
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  25. 2026-07-06 16:24 UTCEPSS rescore
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  39. 2026-06-23 21:30 UTCEPSS rescore
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  42. 2026-06-21 14:54 UTCEPSS rescore
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  44. 2026-06-21 01:57 UTCEPSS rescore
  45. 2026-06-21 01:57 UTCEPSS rescore
  46. 2026-06-19 19:23 UTCEPSS rescore
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  48. 2026-06-18 17:50 UTCEPSS rescore
  49. 2026-06-17 17:50 UTCEPSS rescore
  50. 2026-06-17 17:49 UTCEPSS rescore
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  70. 2026-06-01 13:49 UTCEPSS rescore
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  72. 2026-05-31 22:28 UTCEPSS rescore
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  74. 2026-05-31 00:14 UTCEPSS rescore
  75. 2026-05-29 13:41 UTCEPSS rescore

Frequently asked(4)

What is CVE-2015-7804?
CVE-2015-7804 is a medium vulnerability published on December 11, 2015. Off-by-one error in the pharparsezipfile function in ext/phar/zip.c in PHP before 5.5.30 and 5.6.x before 5.6.14 allows remote attackers to cause a denial of service (uninitialized pointer dereference and application crash) by including the / filename in a .zip PHAR archive.
When was CVE-2015-7804 disclosed?
CVE-2015-7804 was first published in the National Vulnerability Database on December 11, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-7804 actively exploited?
CVE-2015-7804 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 5.2% of all scored CVEs.
How do I remediate CVE-2015-7804?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-7804, 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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