CVE-2021-21040

Acrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code Execution

HIGH
7.8
CVSS Score
Published: February 11, 2021 at 07:42 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
3 products affected across 1 vendorAcrobat ReaderAcrobatAcrobat DC· also runs on 2 platforms

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Severity
HIGH7.8
Exploit prediction
EPSS 3%

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 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

17.0 ≤ v ≤ 17.011.3018820.0 ≤ v ≤ 20.001.30018
apple-macos (environment) · microsoft-windows (environment)
v ≤ 20.013.20074
apple-macos (environment) · microsoft-windows (environment)
v ≤ 2017.011.30188v ≤ 2020.001.30018v ≤ 2020.013.2007417.0 ≤ v ≤ 17.011.3018820.0 ≤ v ≤ 20.001.300183
apple-macos (environment) · microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.8HIGHadobe
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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