Adobe After Effects up to 25.6.4/26.0 File out-of-bounds write

Summaryinfo

A vulnerability was found in Adobe After Effects up to 25.6.4/26.0. It has been classified as critical. Impacted is an unknown function of the component File Handler. Performing a manipulation results in out-of-bounds write. This vulnerability is identified as CVE-2026-34643. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe After Effects up to 25.6.4/26.0. It has been classified as critical. This affects an unknown code block of the component File Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

After Effects versions 26.0, 25.6.4 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

It is possible to read the advisory at helpx.adobe.com. This vulnerability is uniquely identified as CVE-2026-34643 since 03/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/13/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314330 (Adobe After Effects < 25.6.5 / 26.0 < 26.2 Multiple Arbitrary code execution (APSB26-48) (macOS)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (314330). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Multimedia Processing Software

Vendor

• Adobe

Name

• After Effects

Version

• 25.6.0
• 25.6.1
• 25.6.2
• 25.6.3
• 25.6.4
• 26.0

License

• commercial

Website

• Vendor: https://www.adobe.com/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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