User-context information disclosure
Published Feb 11, 2021 · Updated Apr 23, 2025
Improper input validation in Adobe Acrobat Reader 2020.013.20074 and earlier allows attackers to disclose data through a malicious file. Adobe has not published the parser, file structure, or failed validation operation that exposes the data. Exploitation requires a victim to open the crafted file, and disclosure is limited to information available in the current user's context.
Summary
What happened
Improper input validation in Adobe Acrobat Reader 2020.013.20074 and earlier allows attackers to disclose data through a malicious file. Adobe has not published the parser, file structure, or failed validation operation that exposes the data. Exploitation requires a victim to open the crafted file, and disclosure is limited to information available in the current user's context.
The record
- CVE
- CVE-2021-21060
- Published
- Feb 11, 2021
- Updated
- Apr 23, 2025
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-20, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2021CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=2017.011.30188
- Affected versionversion=unspecified <=2020.001.30018
- Affected versionversion=unspecified <=2020.013.20074
- Affected versionversion=unspecified <=None
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo