CVE-2021-39826

Name: CVE-2021-39826
Creator: NVD / NIST
Published: 2021-09-27T16:15:10.13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 2.00%

Last modified Jun 17, 2026

CVE-2021-39826 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary command execution vulnerability. An authenticated attacker could leverage this vulnerability to execute arbitrary commands. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary command execution vulnerability. An authenticated attacker could leverage this vulnerability to execute arbitrary commands. User interaction is required to abuse this vulnerability in that a user must open a maliciously crafted .epub file.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

2.00%

78.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Adobe	Digital Editions	<= 4.5.11.187646

References

https://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.htmlPatch, Vendor Advisory
https://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.htmlPatch, Vendor Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39826?

How severe is CVE-2021-39826?

CVE-2021-39826 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39826?

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-2021-39826?

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

Scan your code now

Source: NVD / NIST