CVE-2021-21089

Name: CVE-2021-21089
Creator: NVD / NIST
Published: 2021-09-30T15:15:07.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 1.81%

Last modified Jun 17, 2026

CVE-2021-21089 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges in the context of the current user. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

Description

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Metrics

CVSS 3.1

3.3/10

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

EPSS Probability

1.81%

75.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Adobe	Acrobat Dc	>= 20.006.20034, <= 20.013.20074
Adobe	Acrobat Reader Dc	>= 20.006.20034, <= 20.013.20074
Adobe	Acrobat Dc	>= 20.001.30005, <= 20.001.30018
Adobe	Acrobat Reader Dc	>= 20.001.30005, <= 20.001.30018
Adobe	Acrobat Dc	>= 17.011.30158, <= 17.011.30188
Adobe	Acrobat Reader Dc	>= 17.011.30158, <= 17.011.30188

References

https://helpx.adobe.com/security/products/acrobat/apsb21-09.htmlRelease Notes, Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-09.htmlRelease Notes, Vendor Advisory

Timeline

Published: Sep 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21089?

How severe is CVE-2021-21089?

CVE-2021-21089 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21089?

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-2021-21089?

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

Scan your code now

Source: NVD / NIST