CVE-2021-28545

Acrobat Reader DC Missing Support for Integrity Check

HIGH
8.1
CVSS Score
Published: April 1, 2021 at 01:35 PM UTC
Updated: June 17, 2026 at 03:46 AM UTC
3 products affected across 1 vendorAcrobat ReaderAcrobatAcrobat DC· also runs on 2 platforms

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Severity
HIGH8.1
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 missing support for an integrity check. An unauthenticated attacker would have the ability to completely manipulate data in a certified PDF without invalidating the original certification. Exploitation of this issue requires user interaction in that a victim must open the tampered file.

Affected

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

17.011.30059 ≤ v ≤ 17.011.3018820.001.30005 ≤ v ≤ 20.001.30018
apple-macos (environment) · microsoft-windows (environment)
15.008.20082 ≤ v ≤ 20.013.20074
apple-macos (environment) · microsoft-windows (environment)
v ≤ 2017.011.30188v ≤ 2020.001.30018v ≤ 2020.013.2007417.011.30059 ≤ v ≤ 17.011.3018820.001.30005 ≤ v ≤ 20.001.30018
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:

References (1)

CVSS

8.1HIGHadobe
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-353

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