CVE-2016-7126

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 9%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.

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
94.6%
KEV
Not listed

Published

September 12, 2016

Last Modified

May 6, 2026

Advisory Details (9)

Auto-updated May 8, 2026
No patch confirmed yet.
generic

PHP: Multiple vulnerabilities (GLSA 201611-22) — Gentoo security

https://security.gentoo.org/glsa/201611-22
generic

Fix bug#72697 - select_colors write out-of-bounds · php/php-src@b6f13a5 · GitHub

https://github.com/php/php-src/commit/b6f13a5ef9d6280cf984826a5de012a32c396cd4?w=1
generic

Fix bug#72697 - select_colors write out-of-bounds · php/php-src@28022c9 · GitHub

https://github.com/php/php-src/commit/28022c9b1fd937436ab67bb3d61f652c108baf96
generic

PHP :: Sec Bug #72697 :: select_colors write out-of-bounds

https://bugs.php.net/bug.php?id=72697
generic
http://www.securityfocus.com/bid/92755
generic

PHP: PHP 7 ChangeLog

http://www.php.net/ChangeLog-7.php
generic

PHP: PHP 5 ChangeLog

http://www.php.net/ChangeLog-5.php
generic
http://rhn.redhat.com/errata/RHSA-2016-2750.html
generic

oss-security - Re: CVE assignment for PHP 5.6.25 and 7.0.10 - and libcurl

http://openwall.com/lists/oss-security/2016/09/02/9

Vendor Advisories for CVE-2016-7126(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrh-php56-php-pear-1:1.9.5-4.el72016-11-15redhat

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.

Data Freshness Timeline

(refreshed 14× in last 7d / 39× 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 112 total refreshes for this CVE.

  1. 2026-07-23 01:24 UTCEG score recompute
  2. 2026-07-22 22:03 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
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  66. 2026-05-20 09:02 UTCVendor advisory
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  74. 2026-05-19 16:53 UTCVendor advisory
  75. 2026-05-19 16:53 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2016-7126?
CVE-2016-7126 is a critical vulnerability published on September 12, 2016. The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other…
When was CVE-2016-7126 disclosed?
CVE-2016-7126 was first published in the National Vulnerability Database on September 12, 2016, 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-2016-7126 actively exploited?
CVE-2016-7126 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-7126?
CVE-2016-7126 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-7126?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-7126, 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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