Adobe Media Encoder 3GP File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability
Priority LOW 36CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Adobe Media Encoder versions 22.0, 15.4.2 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious 3GP file
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00365 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Adobe | Media Encoder | up to 15.4.2 | — | No fix listed | CNA |
- Media Encoder VendorAdobe Affected up to 15.4.2 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:adobe:media_encoder:*:*:*:*:*:*:*:* | before 15.4.3 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:media_encoder:22.0:*:*:*:*:*:*:* | 22.0 | Vulnerable | Adobe |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:adobe:media_encoder:*:*:*:*:*:*:*:* Versions before 15.4.3 Vulnerable ·Adobe
- cpe:2.3:a:adobe:media_encoder:22.0:*:*:*:*:*:*:* Versions 22.0 Vulnerable ·Adobe
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-43757
- 2026-10-03 Alias added: GHSA-399f-937r-fwr9
References
More Adobe Media Encoder vulnerabilities
- TI-2019-05918 Out-of-bounds write in Adobe Media Encoder CVSS 3.1CRITICAL 9.8
- TI-2019-05549 Use after free in Adobe Media Encoder CVSS 3.0HIGH 8.8
- TI-2021-14520 Adobe Media Encoder Improper Memory Access When Parsing SVG Files Could Lead To Remote Code Execution CVSS 3.1HIGH 7.8
- TI-2021-14465 Adobe Media Encoder Memory Corruption Could Lead To Remote Code Execution CVSS 3.1HIGH 7.8
- TI-2020-03279 Out-of-bounds write in Adobe Media Encoder CVSS 3.1HIGH 7.8
- TI-2019-05551 Out-of-bounds read in Adobe Media Encoder CVSS 3.0MEDIUM 6.5
Sources
- CVE-2021-43757 · CVE Program
- CVE-2021-43757 · NVD
- FIRST EPSS
- GHSA-399f-937r-fwr9 · GitHub Advisory Database · CC BY 4.0
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