CVE-2021-40145

Name: CVE-2021-40145
Creator: NVD / NIST
Published: 2021-08-26T01:15:11.747+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.05%

Last modified Jun 17, 2026

CVE-2021-40145 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. gdImageGd2Ptr in gd_gd2.c in the GD Graphics Library (aka LibGD) through 2.3.2 has a double free. NOTE: the vendor's position is "The GD2 image format is a proprietary image format of libgd. EPSS estimates a 2.05% chance of exploitation in the next 30 days.

Description

gdImageGd2Ptr in gd_gd2.c in the GD Graphics Library (aka LibGD) through 2.3.2 has a double free. NOTE: the vendor's position is "The GD2 image format is a proprietary image format of libgd. It has to be regarded as being obsolete, and should only be used for development and testing purposes.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.05%

78.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-415

Affected Software

Vendor	Product	Versions
Libgd	Libgd	<= 2.3.2

References

https://github.com/libgd/libgd/commit/c5fd25ce0e48fd5618a972ca9f5e28d6d62006afPatch, Third Party Advisory
https://github.com/libgd/libgd/issues/700Exploit, Issue Tracking, Third Party Advisory
https://github.com/libgd/libgd/pull/713Issue Tracking, Third Party Advisory
https://github.com/libgd/libgd/commit/c5fd25ce0e48fd5618a972ca9f5e28d6d62006afPatch, Third Party Advisory
https://github.com/libgd/libgd/issues/700Exploit, Issue Tracking, Third Party Advisory
https://github.com/libgd/libgd/pull/713Issue Tracking, Third Party Advisory

Timeline

Published: Aug 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40145?

How severe is CVE-2021-40145?

CVE-2021-40145 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.05% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40145?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40145?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST