Wiz
Vulnerability DatabaseCVE-2021-28565

CVE-2021-28565: 
Adobe Acrobat Reader Continuous vulnerability analysis and mitigation

Overview

Acrobat Reader DC versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by an Out-of-bounds Read vulnerability in the PDFLibTool component. The vulnerability was discovered and reported by Haboob Labs, and was assigned CVE-2021-28565 (Adobe Advisory).

Technical details

The vulnerability is classified as an Out-of-bounds Read (CWE-125) issue in the PDFLibTool component. It received a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, and a CVSS v2.0 score of 9.3 (HIGH) (NVD).

Impact

An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. The vulnerability could potentially lead to complete compromise of the affected system's confidentiality, integrity, and availability (NVD).

Mitigation and workarounds

Adobe has released security updates to address this vulnerability. Users should update to the latest version of Adobe Acrobat and Reader DC that is newer than the affected versions (2021.001.20150, 2020.001.30020, and 2017.011.30194) (Adobe Advisory).

Additional resources

Source: This report was generated using AI

Related Adobe Acrobat Reader Continuous vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-54257HIGH7.8
  • Adobe Acrobat Reader ContinuousAdobe Acrobat Reader Continuous
  • cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
NoYesSep 09, 2025
CVE-2025-47112MEDIUM5.5
  • Adobe Acrobat Reader ContinuousAdobe Acrobat Reader Continuous
  • cpe:2.3:a:adobe:acrobat
NoYesJun 10, 2025
CVE-2025-47111MEDIUM5.5
  • Adobe Acrobat Reader ContinuousAdobe Acrobat Reader Continuous
  • cpe:2.3:a:adobe:acrobat_reader_dc
NoYesJun 10, 2025
CVE-2025-43579MEDIUM5.5
  • Adobe Acrobat Reader ContinuousAdobe Acrobat Reader Continuous
  • cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
NoYesJun 10, 2025
CVE-2025-54255MEDIUM4
  • Adobe Acrobat Reader ContinuousAdobe Acrobat Reader Continuous
  • cpe:2.3:a:adobe:acrobat_reader_dc
NoYesSep 09, 2025

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo