Adobe After Effects: Improper input validation allows code execution
Summary
Adobe After Effects versions 26.5 and earlier and 25.6.6 and earlier contain an improper input validation flaw (CVE-2026-113534) that can lead to arbitrary code execution. An attacker can run code in the context of the current user if a victim opens a malicious file, so user interaction is required. The CVSS score of 8.6 uses a changed scope rating, and Adobe reports no exploitation in the wild.
Affected
- Adobe After Effects 26.5 and earlier (Windows and macOS)
- Adobe After Effects 25.6.6 and earlier (Windows and macOS)
Fixed in
- Adobe After Effects 26.x: update to 26.5.3 or later
- Adobe After Effects 25.x: update to 27.0 (per the CVE record and bulletin APSB26-100)
Workaround
- Unknown. Adobe publishes no workaround; updating is the only mitigation.
- Open project files, templates and assets only from trusted sources.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-100.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- No public proof of concept found.
Our recommendation
- Update all After Effects installations to 26.5.3 or 27.0, depending on the installed branch, through Creative Cloud.
- Check which workstations run After Effects and prioritise those that handle client or external files.
- Instruct users to open project files and templates only from trusted sources.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-100 www.adobe.com
- CVE Record CVE-2026-113534 www.cve.org
- Zero Day Initiative: November 2026 Security Update Review www.zerodayinitiative.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 01:08.
Original description (NVD)
After Effects is affected by an Improper Input Validation vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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