Code execution via AcroForm use-after-free
Published May 11, 2022 · Updated May 28, 2026
Use-after-free in AcroForm event processing in Adobe Acrobat Reader allows attackers to execute code as the current user. Adobe identifies the affected locus but has not disclosed which object's lifetime is mishandled or which AcroForm event operation accesses freed memory. Exploitation requires a victim to open a malicious file, after which attacker-controlled code runs with that user's privileges.
Summary
What happened
Use-after-free in AcroForm event processing in Adobe Acrobat Reader allows attackers to execute code as the current user. Adobe identifies the affected locus but has not disclosed which object's lifetime is mishandled or which AcroForm event operation accesses freed memory. Exploitation requires a victim to open a malicious file, after which attacker-controlled code runs with that user's privileges.
The record
- CVE
- CVE-2022-27799
- Published
- May 11, 2022
- Updated
- May 28, 2026
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-416, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 11, 2022CVE publishedPublication date reported by the CVE source.
- May 28, 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?
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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