CVE-2021-45063

Name: CVE-2021-45063
Creator: NVD / NIST
Published: 2022-01-14T20:15:14.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 6.22%

Last modified Jun 17, 2026

CVE-2021-45063 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a use-after-free vulnerability in the processing of Format event actions that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. EPSS estimates a 6.22% chance of exploitation in the next 30 days.

Description

Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a use-after-free vulnerability in the processing of Format event actions that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

6.22%

92.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Adobe	Acrobat Dc	>= 15.008.20082, <= 21.007.20099
Adobe	Acrobat Reader Dc	>= 15.008.20082, <= 21.007.20099
Adobe	Acrobat	>= 17.011.30059, <= 17.011.30204
Adobe	Acrobat	>= 20.001.30005, <= 20.004.30017
Adobe	Acrobat Reader	>= 17.011.30059, <= 17.011.30204
Adobe	Acrobat Reader	>= 20.001.30005, <= 20.004.30017

References

https://helpx.adobe.com/security/products/acrobat/apsb22-01.htmlVendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb22-01.htmlVendor Advisory

Timeline

Published: Jan 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45063?

How severe is CVE-2021-45063?

CVE-2021-45063 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 6.22% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45063?

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-2021-45063?

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

Scan your code now

Source: NVD / NIST