CVE-2021-40731

Name: CVE-2021-40731
Creator: NVD / NIST
Published: 2021-10-15T15:15:09.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.00%

Last modified Jun 17, 2026

CVE-2021-40731 is a vulnerability of currently unknown severity. Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by an out-of-bounds write vulnerability when parsing a crafted JPEG2000 file, which could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.. EPSS estimates a 8.00% chance of exploitation in the next 30 days.

Description

Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by an out-of-bounds write vulnerability when parsing a crafted JPEG2000 file, which could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Metrics

EPSS Probability

8.00%

94.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Adobe	Acrobat Dc	>= 15.008.20082, <= 21.007.20095
Adobe	Acrobat Reader Dc	>= 15.008.20082, <= 21.007.20095
Adobe	Acrobat Dc	>= 15.008.20082, <= 21.007.20096
Adobe	Acrobat Reader Dc	>= 15.008.20082, <= 21.007.20096
Adobe	Acrobat	>= 20.001.30005, <= 20.004.30015
Adobe	Acrobat Reader	>= 20.001.30005, <= 20.004.30015
Adobe	Acrobat	>= 17.011.30158, <= 17.011.30202
Adobe	Acrobat Reader	>= 17.011.30158, <= 17.011.30202

References

https://helpx.adobe.com/security/products/acrobat/apsb21-104.htmlRelease Notes, Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-104.htmlRelease Notes, Vendor Advisory

Timeline

Published: Oct 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40731?

How severe is CVE-2021-40731?

Severity scoring for CVE-2021-40731 is pending analysis. The EPSS model estimates a 8.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40731?

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-2021-40731?

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

Scan your code now

Source: NVD / NIST