Sensitive memory disclosure via malformed 3GP parsing
Published Jul 12, 2023 · Updated Mar 5, 2025
Out-of-bounds read in Adobe Media Encoder 22.0 and 15.4.2 and earlier allows attackers to disclose memory via a malicious 3GP file. The 3GP parser reads beyond a buffer boundary while processing crafted file data, exposing adjacent process memory; Adobe has not named the exact routine or malformed field. Exploitation requires a victim to open the file, and the disclosed memory can weaken ASLR protections.
Summary
What happened
Out-of-bounds read in Adobe Media Encoder 22.0 and 15.4.2 and earlier allows attackers to disclose memory via a malicious 3GP file. The 3GP parser reads beyond a buffer boundary while processing crafted file data, exposing adjacent process memory; Adobe has not named the exact routine or malformed field. Exploitation requires a victim to open the file, and the disclosed memory can weaken ASLR protections.
The record
- CVE
- CVE-2021-43757
- Published
- Jul 12, 2023
- Updated
- Mar 5, 2025
- Vendor
- Adobe
- Product
- Adobe Media Encoder
- Classifications
- CWE-125, CAPEC-540, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 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=0 <=15.4.2
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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