CVE-2016-6128

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity75% × 45%
Exploitation7% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
93%
KEV
Not listed

Published

August 7, 2016

Last Modified

June 17, 2026

References (26)

Vendor Advisories for CVE-2016-6128(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgd3 (2.1.1-4ubuntu0.15.10.2) @ wily2026-05-22ubuntu
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.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.2(1)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.1.1-r2 (17 versions)2.2.1-r2—
Alpine:v3.3(1)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.1.1-r2 (17 versions)2.2.1-r2—
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.2.1-r0 (16 versions)2.2.3-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.2-29-g3c2b605-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.2-29-g3c2b605-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.2-29-g3c2b605-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.2-29-g3c2b605-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libgd22.1.0-5, 2.1.0-5+deb8u1, 2.1.0-5+deb8u2, 2.1.0-5+deb8u32.1.0-5+deb8u4—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 5× 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 122 total refreshes for this CVE.

  1. 2026-08-19 16:59 UTCEPSS rescore
  2. 2026-08-18 13:43 UTCEPSS rescore
  3. 2026-08-16 14:51 UTCEPSS rescore
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  6. 2026-08-14 10:16 UTCOSV refresh
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  24. 2026-07-23 01:23 UTCEG score recompute
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  18. 2026-07-12 08:07 UTCOSV refresh
  19. 2026-07-12 05:43 UTCEPSS rescore
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  41. 2026-06-23 13:30 UTCOSV refresh
  42. 2026-06-22 14:23 UTCEPSS rescore
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  65. 2026-06-06 13:45 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2016-6128?
CVE-2016-6128 is a high vulnerability published on August 7, 2016. The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.
When was CVE-2016-6128 disclosed?
CVE-2016-6128 was first published in the National Vulnerability Database on August 7, 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-2016-6128 actively exploited?
CVE-2016-6128 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.5% of all scored CVEs.
What is the CVSS score of CVE-2016-6128?
CVE-2016-6128 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-6128?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-6128, 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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