CVE-2021-28559

Name: CVE-2021-28559
Creator: NVD / NIST
Published: 2021-09-02T17:15:08.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.59%

Last modified Jun 17, 2026

CVE-2021-28559 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by an Information Exposure vulnerability. An unauthenticated attacker could leverage this vulnerability to get access to restricted data stored within global variables and objects.. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

Description

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by an Information Exposure vulnerability. An unauthenticated attacker could leverage this vulnerability to get access to restricted data stored within global variables and objects.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.59%

72.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-359

Affected Software

Vendor	Product	Versions
Adobe	Acrobat Dc	>= 15.008.20082, <= 21.001.20150
Adobe	Acrobat Reader Dc	>= 15.008.20082, <= 21.001.20150
Adobe	Acrobat	>= 17.011.30059, <= 17.011.30194
Adobe	Acrobat	>= 20.001.30005, <= 20.001.30020
Adobe	Acrobat Reader	>= 17.011.30059, <= 17.011.30194
Adobe	Acrobat Reader	>= 20.001.30005, <= 20.001.30020

References

https://helpx.adobe.com/security/products/acrobat/apsb21-29.htmlRelease Notes, Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-29.htmlRelease Notes, Vendor Advisory

Timeline

Published: Sep 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28559?

How severe is CVE-2021-28559?

CVE-2021-28559 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28559?

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-2021-28559?

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

Scan your code now

Source: NVD / NIST