Adobe Campaign Classic: OS command injection leading to arbitrary code execution
Summary
Adobe Campaign Classic (ACC) version 7 up to and including 7.4.4 build 9402 contains an OS command injection flaw (CWE-78) on Windows and Linux. An authenticated attacker with a low-privilege account can execute arbitrary code in the context of the current user over the network, without user interaction. The CVSS vector indicates a scope change, so the impact can extend beyond the vulnerable component.
Affected
- Adobe Campaign Classic ACC v7: 7.4.4 build 9402 and earlier
- Platforms: Windows, Linux
Fixed in
- Adobe Campaign Classic ACC v7: 7.4.4 build 9403
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-162.
- No public proof-of-concept exploit code has been confirmed (one security news site).
- Not verified against CISA KEV; one third-party aggregator lists KEV as "No".
- EPSS: 1.3 % (percentile 70).
Our recommendation
- Identify all on-premise ACC v7 installations on Windows and Linux and record their build numbers.
- Update to 7.4.4 build 9403 as described in APSB26-162.
- Check whether any ACC instance is reachable from the internet and restrict access if so.
- Review low-privilege accounts on ACC and remove unneeded ones.
- If ACC is hosted by Adobe, confirm with Adobe whether action is required.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-162 www.adobe.com
- The Hacker News: Adobe fixes 8 critical Campaign Classic flaws thehackernews.com
- Strix AI: CVE-2026-104353 www.strix.ai
- OffSeq Radar: CVE-2026-104353 radar.offseq.com
- SecurityOnline: Adobe Campaign Classic vulnerabilities securityonline.info
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 30 Oct 2026, 14:52.
Original description (NVD)
Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability that could result in arbitrary code execution in the context of the current user. A low-privileged attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue does not require user interaction. Scope is changed.
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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