Adobe Photoshop: Out-of-bounds write leading to arbitrary code execution
Summary
Adobe Photoshop Desktop contains an out-of-bounds write vulnerability (CWE-787) that can lead to arbitrary code execution in the context of the current user. Exploitation requires user interaction: a victim must open a malicious file. Adobe is not aware of any exploits in the wild for this update.
Affected
- Photoshop 2026: version 27.10 and earlier (Windows and macOS)
- Photoshop 2025: version 26.11.7 and earlier (Windows and macOS)
Fixed in
- Photoshop 2026: version 27.11 (Windows and macOS)
- Photoshop 2025: version 26.11.8 according to a third-party title; not confirmed in Adobe's advisory excerpt
- Mapping of CVE-2026-104346 to a specific fix: Unknown.
Workaround
- Unknown. No vendor-documented workaround is known; installing the update is the recommended measure.
Exploitation
- Adobe states it is not aware of any exploits in the wild for issues in this update.
- Public proof of concept: Unknown.
- Not listed in CISA KEV according to a third-party tracker; not verified directly.
Our recommendation
- Update Photoshop 2026 to 27.11 and Photoshop 2025 to the latest 26.11.x release via the Creative Cloud desktop app or the Admin Console.
- Prioritise workstations used to open external files such as email attachments or downloads.
- Ensure users cannot bypass or postpone updates.
- Verify the fixed version for Photoshop 2025 in the full Adobe advisory APSB26-158.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-158 www.adobe.com
- Zero Day Initiative: October 2026 Security Update Review www.zerodayinitiative.com
- Strix AI: CVE-2026-104346 www.strix.ai
- OffSeq Radar: CVE-2026-104346 radar.offseq.com
- Nessus plugin mirror: APSB26-158 (macOS) vulners.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 2 Nov 2026, 00:07.
Original description (NVD)
Photoshop Desktop 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.
NVD references (1)
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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