Code execution via JPEG2000 out-of-bounds read
Published Aug 24, 2021 · Updated Sep 16, 2024
An out-of-bounds read in Adobe Acrobat Reader allows attackers to execute code as the current user by opening a malicious PDF. The CNA identifies JPEG2000 editing as the affected area but does not disclose the parser routine, malformed field, or missing bounds check causing the read. Exploitation requires a user to open the crafted file; successful exploitation runs attacker-controlled code with that user's privileges.
Summary
What happened
An out-of-bounds read in Adobe Acrobat Reader allows attackers to execute code as the current user by opening a malicious PDF. The CNA identifies JPEG2000 editing as the affected area but does not disclose the parser routine, malformed field, or missing bounds check causing the read. Exploitation requires a user to open the crafted file; successful exploitation runs attacker-controlled code with that user's privileges.
The record
- CVE
- CVE-2021-28551
- Published
- Aug 24, 2021
- Updated
- Sep 16, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-125, T1203, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 24, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=2017.011.30196
- Affected versionversion=unspecified <=2020.001.30025
- Affected versionversion=unspecified <=2021.001.20155
- 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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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