Adobe After Effects: Out-of-bounds write allows code execution via malicious file
Summary
An out-of-bounds write in Adobe After Effects can be abused to execute arbitrary code in the context of the logged-in user. The attacker must deliver a malicious file that the victim opens in the application, so phishing or file exchange with clients and freelancers is the main route. The flaw is rated High (CVSS 3.1 7.8) and is part of Adobe's priority 3 update APSB26-100.
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 26.5.3 (26.x line)
- Adobe After Effects 27.0
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-100.
- CISA SSVC assessment: exploitation none, not automatable.
- No CISA KEV listing known.
Our recommendation
- Update Adobe After Effects to 26.5.3 or 27.0 via the Creative Cloud desktop app on all affected workstations.
- Inventory installed After Effects versions to identify outdated systems.
- Until patched, do not open project or other files from unknown or untrusted senders.
- Train staff to recognise phishing emails with attached or linked project files.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE record CVE-2026-113528 (CVE Program) www.cve.org
- Adobe Security Bulletin APSB26-100 www.adobe.com
- ZDI 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, 02:14.
Original description (NVD)
After Effects is 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.
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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