Is CVE-2021-40812 in the CISA KEV catalog?

No. CVE-2021-40812 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40812?

CVE-2021-40812 has a CVSS v3 base score of 6.5 (MEDIUM).

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

CVE-2021-40812 has an EPSS score of 1.66% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40812?

Upgrade libgd2 on debian 11 to 2.3.0-2+deb11u1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40812

MEDIUMEPSS 74th pctl

6.5

CVSS v3

NVD

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.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

libgd2Debian

Fixed in:2.3.0-2+deb11u1CVE-2021-40812

Fixed in:2.3.3-1CVE-2021-40812

libgd-devUbuntu

Fixed in:2.1.1-4ubuntu0.16.04.12+esm4USN-7112-1

Fixed in:2.2.5-4ubuntu0.5+esm3USN-7112-1

Fixed in:2.2.5-5.2ubuntu2.4USN-7112-1

Fixed in:2.3.0-2ubuntu2.3USN-7112-1

libgd-toolsUbuntu

Fixed in:2.1.1-4ubuntu0.16.04.12+esm4USN-7112-1

Fixed in:2.2.5-4ubuntu0.5+esm3USN-7112-1

Fixed in:2.2.5-5.2ubuntu2.4USN-7112-1

Fixed in:2.3.0-2ubuntu2.3USN-7112-1

libgd2Ubuntu

Fixed in:2.1.1-4ubuntu0.16.04.12+esm4USN-7112-1

Fixed in:2.2.5-4ubuntu0.5+esm3USN-7112-1

Fixed in:2.2.5-5.2ubuntu2.4USN-7112-1

Fixed in:2.3.0-2ubuntu2.3USN-7112-1

libgd3Ubuntu

Fixed in:2.1.1-4ubuntu0.16.04.12+esm4USN-7112-1

Fixed in:2.2.5-4ubuntu0.5+esm3USN-7112-1

Fixed in:2.2.5-5.2ubuntu2.4USN-7112-1

Fixed in:2.3.0-2ubuntu2.3USN-7112-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

1.66%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch2

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

Embed a live status badge for CVE-2021-40812

Markdown

[![CVE-2021-40812](https://tridentstack.com/cve/badge/CVE-2021-40812.svg)](https://tridentstack.com/cve/CVE-2021-40812)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-40812"><img src="https://tridentstack.com/cve/badge/CVE-2021-40812.svg" alt="CVE-2021-40812"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.