ASLR bypass via annotation out-of-bounds read
Published May 11, 2022 · Updated May 27, 2026
Out-of-bounds read in Adobe Acrobat Reader DC, 2020, and 2017 allows attackers to disclose process memory through a crafted PDF. The annotation parser reads past the end of an allocated memory structure in DC 22.001.20085 and earlier, 2020 20.005.3031x and earlier, and 2017 17.012.30205 and earlier; Adobe has not disclosed the affected routine or malformed field. A victim must open the malicious file, and the disclosed address data can help bypass ASLR; no memory write or code execution is reported.
Summary
What happened
Out-of-bounds read in Adobe Acrobat Reader DC, 2020, and 2017 allows attackers to disclose process memory through a crafted PDF. The annotation parser reads past the end of an allocated memory structure in DC 22.001.20085 and earlier, 2020 20.005.3031x and earlier, and 2017 17.012.30205 and earlier; Adobe has not disclosed the affected routine or malformed field. A victim must open the malicious file, and the disclosed address data can help bypass ASLR; no memory write or code execution is reported.
The record
- CVE
- CVE-2022-28263
- Published
- May 11, 2022
- Updated
- May 27, 2026
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 11, 2022CVE publishedPublication date reported by the CVE source.
- May 27, 2026Record 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 <=17.012.30205
- Affected versionversion=unspecified <=20.005.3031x
- Affected versionversion=unspecified <=22.001.20085
- Affected versionversion=unspecified <=None
What conditions does exploitation require?
What is affected?
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
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Your stack
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