CVEvulnerability

CVE-2021-28550

8.8 HIGH Known exploited Published 2021-09-02 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Adobe Acrobat and Reader Use-After-Free Vulnerability — Adobe Acrobat and Reader

Adobe Acrobat and Reader contains a use-after-free vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.

Added to KEV
2021-11-03
Remediation due
2021-11-17
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-28550
Status
Analyzed
Published
2021-09-02
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
9.6 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-416

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 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.

Affected configurations

• 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) • adobe acrobat dc (>= 15.008.20082 <= 21.001.20149) • adobe acrobat reader dc (>= 15.008.20082 <= 21.001.20149)

Related

Weakness · CWE (1)

References