Memory disclosure via malicious-file out-of-bounds read
Published Apr 12, 2023 · Updated Mar 5, 2025
Out-of-bounds read in Adobe Acrobat Reader 23.001.20093 and earlier allows attackers to disclose process memory through a malicious PDF. Adobe has not disclosed the affected parser or the specific bounds-check failure that causes the read beyond allocated memory. Exploitation requires a victim to open the file, exposing sensitive memory and potentially revealing address-layout data used by ASLR.
Summary
What happened
Out-of-bounds read in Adobe Acrobat Reader 23.001.20093 and earlier allows attackers to disclose process memory through a malicious PDF. Adobe has not disclosed the affected parser or the specific bounds-check failure that causes the read beyond allocated memory. Exploitation requires a victim to open the file, exposing sensitive memory and potentially revealing address-layout data used by ASLR.
The record
- CVE
- CVE-2023-26397
- Published
- Apr 12, 2023
- Updated
- Mar 5, 2025
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 12, 2023CVE publishedPublication date reported by the CVE source.
- Mar 5, 2025Record 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 <=20.005.30441
- Affected versionversion=unspecified <=23.001.20093
- 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.
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Technologies
Your stack
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Your stack
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