CVE-2021-28635CWE-416

Adobe Acrobat Reader Use-After-Free Vulnerability

High · published August 20, 2021

Patch now

High probability of exploitation

CVSS calls it high at 7.8. It sits in the 98.9th percentile for exploit probability.

CVSS v3.1

7.8

EPSS

51%

Percentile

98.9

In the wild

Unconfirmed

What it is

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a use-after-free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

The record

Technical detail

CVSS v3.1: 7.8 · HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.51184 · 98.9th percentile
Weakness: CWE-416 · Use After Free
Published: 2021-08-20T18:09Z

EPSS history

Timeline

20 AUG 18:09Z
Adobe Acrobat Reader Use-After-Free Vulnerability
cvelistv5