Use After Free in Adobe Acrobat

CVE-2021-45063

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.

Vulnerability class: Use-After-Free

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.062 (93.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-45063: held from 0.062 to 0.062.

EPSS over last 30 days · oldest: 0.062 · newest: 0.062 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-45063?
CVE-2021-45063 is a medium-severity vulnerability in Adobe Acrobat, classified under Use After Free. CVSS score: 5.5/10. Published 2022-01-14.
How severe is CVE-2021-45063?
Medium severity. CVSS v3 base score is 5.5 out of 10.