Sensitive memory disclosure via null pointer dereference
Published Sep 29, 2021 · Updated Sep 17, 2024
Null pointer dereference in Adobe Acrobat Reader allows attackers to disclose sensitive memory through a malicious PDF file. Adobe has not disclosed the affected component or how crafted file data turns the null dereference into memory disclosure. Exploitation requires no prior privileges, but a victim must open the file; the documented consequence is memory disclosure only.
Summary
What happened
Null pointer dereference in Adobe Acrobat Reader allows attackers to disclose sensitive memory through a malicious PDF file. Adobe has not disclosed the affected component or how crafted file data turns the null dereference into memory disclosure. Exploitation requires no prior privileges, but a victim must open the file; the documented consequence is memory disclosure only.
The record
- CVE
- CVE-2021-39860
- Published
- Sep 29, 2021
- Updated
- Sep 17, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-476, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 29, 2021CVE publishedPublication date reported by the CVE source.
- Sep 17, 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 <=2017.011.30199
- Affected versionversion=unspecified <=2020.004.30006
- Affected versionversion=unspecified <=2021.005.20060
- 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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