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No exploitation reportedFix available

CVE-2021-40812

No exploitation reported by the sources we read.

  • Published2021-09-08
  • WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The GD Graphics Library (aka LibGD) through 2.3.2 has an out-of-bounds read because of the lack of certain gdGetBuf and gdPutBuf return value checks.

Timeline

dates in UTC
  1. 2021-09-0821:15CVE publishedNVD

Versions per branch

NVD
Libgd
BranchAffectedFixed in
2.3≤ 2.3.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gdTuxCare:AlmaLinux:9.2all versions · fixed in 2.3.2-3.el9_2.tuxcare.els3and 2 other packages
  • gdSUSE:Linux Enterprise Workstation Extension 12 SP5all versions · fixed in 2.1.0-24.20.1
  • gdSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 2.1.0-24.20.1
  • gdSUSE:Linux Enterprise Server for SAP Applications 12 SP5all versions · fixed in 2.1.0-24.20.1
  • gdSUSE:Linux Enterprise Server 12 SP5all versions · fixed in 2.1.0-24.20.1
  • gdSUSE:Linux Enterprise Module for Package Hub 15 SP3all versions · fixed in 2.2.5-11.3.1
  • gdSUSE:Linux Enterprise Module for Package Hub 15 SP2all versions · fixed in 2.2.5-11.3.1
  • gdSUSE:Linux Enterprise Module for Desktop Applications 15 SP3all versions · fixed in 2.2.5-11.3.1

20 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2021-09-08
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-53w9-wg73-ghrw

Frequently asked questions

What is CVE-2021-40812?

The GD Graphics Library (aka LibGD) through 2.3.2 has an out-of-bounds read because of the lack of certain gdGetBuf and gdPutBuf return value checks.

Is CVE-2021-40812 actively exploited?

Active exploitation of CVE-2021-40812 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-40812?

CVE-2021-40812 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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