CVE-2016-10166

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
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS: 9.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Integer underflow in the _gdContributionsAlloc function in gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via vectors related to decrementing the u variable.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
11%
EPSS %ILE
96%
KEV
Not listed

Published

March 15, 2017

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Sep 9, 2026
Patch available. Sources: github_commit, redhat.
generic

LibGD 2.2.4 release

http://libgd.github.io/release-2.2.4.html
github_commit Patch Available

commit 60bfb401ad5a (libgd/libgd)

Patch available: libgd/libgd gd-2.3.0 (contains commit 60bfb401ad5a)

https://github.com/libgd/libgd/commit/60bfb401ad5a4a8ae995dcd36372fe15c71e1a35
redhat Patch Available
https://access.redhat.com/errata/RHSA-2019:3299
redhat Patch Available
https://access.redhat.com/errata/RHSA-2019:2519
generic

CVE-2016-10166 - PSIRT.COM

http://www.securityfocus.com/bid/95869
generic

oss-security - Re: CVE Requests: libgd: potential unsigned onderflow, denial-of-service in gdImageCreateFromGd2Ctx and signed overflow in gd_io.c

http://www.openwall.com/lists/oss-security/2017/01/28/6
generic

oss-security - CVE Requests: libgd: potential unsigned onderflow, denial-of-service in gdImageCreateFromGd2Ctx and signed overflow in gd_io.c

http://www.openwall.com/lists/oss-security/2017/01/26/1
generic Patch Available

[SECURITY] [DSA 3777-1] libgd2 security update

http://www.debian.org/security/2017/dsa-3777

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgd3 (2.2.1-1ubuntu3.3) @ yakkety2026-05-20ubuntu
redhatrh-php72-php-0:7.2.24-1.el72019-11-01redhat
redhatrh-php71-php-0:7.1.30-1.el72019-08-19redhat

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

(9 across 8 ecosystems)
Alpine:v3.5(2)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.2.3-r1 (18 versions)2.2.4-r0—
php55.2.10-r0 ... 5.6.9-r1 (174 versions)5.6.40-r0—
Alpine:v3.3(1)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.1.1-r2 (17 versions)2.2.4-r0—
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
gd2.0.35-r0 ... 2.2.3-r1 (18 versions)2.2.4-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.4-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.4-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.4-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.2.4-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libgd22.1.0-5 ... 2.1.0-5+deb8u8 (9 versions)2.1.0-5+deb8u9—

Weakness Classification(1)

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

All Vendor Advisories

(3)

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 5× in last 7d / 20× 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 150 total refreshes for this CVE.

  1. 2026-09-15 03:05 UTCEPSS rescore
  2. 2026-09-15 00:44 UTCOSV refresh
  3. 2026-09-12 14:55 UTCEPSS rescore
  4. 2026-09-11 09:31 UTCEPSS rescore
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  11. 2026-09-01 03:31 UTCEPSS rescore
  12. 2026-08-27 14:20 UTCEPSS rescore
  13. 2026-08-27 00:14 UTCOSV refresh
  14. 2026-08-26 14:41 UTCEPSS rescore
  15. 2026-08-25 13:44 UTCEPSS rescore
  16. 2026-08-23 00:13 UTCEPSS rescore
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  1. 2026-08-10 14:08 UTCOSV refresh
  2. 2026-08-09 13:42 UTCEPSS rescore
  3. 2026-08-08 16:32 UTCEPSS rescore
  4. 2026-08-07 16:22 UTCEPSS rescore
  5. 2026-08-06 13:42 UTCEPSS rescore
  6. 2026-08-05 19:12 UTCEPSS rescore
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  8. 2026-08-01 04:11 UTCEPSS rescore
  9. 2026-07-30 01:26 UTCEPSS rescore
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  11. 2026-07-28 15:31 UTCEPSS rescore
  12. 2026-07-26 14:50 UTCEPSS rescore
  13. 2026-07-25 15:00 UTCOSV refresh
  14. 2026-07-25 14:13 UTCEPSS rescore
  15. 2026-07-24 14:13 UTCEPSS rescore
  16. 2026-07-23 14:14 UTCEPSS rescore
  17. 2026-07-23 01:21 UTCEG score recompute
  18. 2026-07-23 00:22 UTCEG score recompute
  19. 2026-07-22 22:00 UTCEG score recompute
  20. 2026-07-22 14:04 UTCEPSS rescore
  21. 2026-07-21 15:21 UTCEPSS rescore
  22. 2026-07-21 15:21 UTCEPSS rescore
  23. 2026-07-20 17:03 UTCEPSS rescore
  24. 2026-07-19 14:27 UTCEPSS rescore
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  26. 2026-07-19 02:26 UTCEPSS rescore
  27. 2026-07-19 02:26 UTCEPSS rescore
  28. 2026-07-18 10:00 UTCEPSS rescore
  29. 2026-07-16 16:59 UTCEPSS rescore
  30. 2026-07-15 16:54 UTCEPSS rescore
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  37. 2026-07-09 19:05 UTCEPSS rescore
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  39. 2026-07-08 15:10 UTCEPSS rescore
  40. 2026-07-08 09:57 UTCOSV refresh
  41. 2026-07-07 13:42 UTCEPSS rescore
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  43. 2026-07-06 16:24 UTCEPSS rescore
  44. 2026-07-05 02:26 UTCEPSS rescore
  45. 2026-07-04 06:28 UTCEPSS rescore
  46. 2026-07-01 15:02 UTCEPSS rescore
  47. 2026-06-30 23:19 UTCEPSS rescore
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  49. 2026-06-28 14:04 UTCEPSS rescore
  50. 2026-06-28 04:53 UTCEPSS rescore
  51. 2026-06-27 03:05 UTCEPSS rescore
  52. 2026-06-25 13:47 UTCEPSS rescore
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  61. 2026-06-19 21:52 UTCOSV refresh
  62. 2026-06-19 19:23 UTCEPSS rescore
  63. 2026-06-19 19:23 UTCEPSS rescore
  64. 2026-06-18 17:50 UTCEPSS rescore
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  66. 2026-06-17 17:49 UTCEPSS rescore
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  69. 2026-06-15 17:45 UTCEPSS rescore
  70. 2026-06-14 23:14 UTCEPSS rescore
  71. 2026-06-13 22:57 UTCEPSS rescore
  72. 2026-06-12 23:09 UTCEPSS rescore
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  74. 2026-06-11 13:57 UTCEPSS rescore
  75. 2026-06-11 13:57 UTCEPSS rescore

Frequently asked(5)

What is CVE-2016-10166?
CVE-2016-10166 is a critical vulnerability published on March 15, 2017. Integer underflow in the gdContributionsAlloc function in gdinterpolation.c in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via vectors related to decrementing the u variable.
When was CVE-2016-10166 disclosed?
CVE-2016-10166 was first published in the National Vulnerability Database on March 15, 2017, 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-2016-10166 actively exploited?
CVE-2016-10166 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days, which ranks it in the top 4.4% of all scored CVEs.
What is the CVSS score of CVE-2016-10166?
CVE-2016-10166 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-10166?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-10166, 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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