CVE-2017-6363

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the GD Graphics Library (aka LibGD) through 2.2.5, there is a heap-based buffer over-read in tiffWriter in gd_tiff.c. NOTE: the vendor says "In my opinion this issue should not have a CVE, since the GD and GD2 formats are documented to be 'obsolete, and should only be used for development and testing purposes.'

CVSS v3
8.1
EG Score
8.1(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
Severity81% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

February 27, 2020

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Sep 19, 2026
No patch confirmed yet.
generic

Invalid read when call gdImageTiffPtr (CVE-2017-6363) · Issue #383 · libgd/libgd · GitHub

https://github.com/libgd/libgd/issues/383

Affected Packages

(18 across 18 ecosystems)
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
gd—2.2.5-r4—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.14(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.15(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.16(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.17(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
gd—2.3.0-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.3.0-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.3.0-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.3.0-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libgd2—2.3.0-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 19× 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 133 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
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  26. 2026-07-19 18:18 UTCOSV refresh
  27. 2026-07-19 02:26 UTCEPSS rescore
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  49. 2026-07-01 15:02 UTCEPSS rescore
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  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-14 08:13 UTCOSV refresh

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2017-6363?
CVE-2017-6363 is a high vulnerability published on February 27, 2020. In the GD Graphics Library (aka LibGD) through 2.2.5, there is a heap-based buffer over-read in tiffWriter in gd_tiff.c. NOTE: the vendor says "In my opinion this issue should not have a CVE, since the GD and GD2 formats are documented to be 'obsolete, and should only be used for development and…
When was CVE-2017-6363 disclosed?
CVE-2017-6363 was first published in the National Vulnerability Database on February 27, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-6363 actively exploited?
CVE-2017-6363 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 28.7% of all scored CVEs.
What is the CVSS score of CVE-2017-6363?
CVE-2017-6363 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2017-6363?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6363, 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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