Zero Radar
← feed
CriticalVulnerabilityCVE-2026-104351updated 28 Oct 2026, 11:22 UTC

Adobe Campaign Classic: code injection lets low-privilege users run code

A flaw in Adobe Campaign Classic lets someone with a basic user account run their own commands on the system. No clicks from a victim are needed, so it can be triggered without anyone noticing.

Fix availableOfficial, 3 sources
SeverityCriticalCVSS 9.9 of 10
Being exploited?UnclearNo reports either way yet
Fix available?YesAdobe has released patches for this and seven other critical Campaign Classic flaws; the specific fixed version numbers are not stated in the provided material. · since 28 Oct 2026
How sure is this?Official, 3 sourcesBacked by an official source

How the attack works simplified

  1. 1Low-privilege accountAttacker has only a basic login
  2. 2Crafted inputMalicious input reaches code generation
  3. 3Code injectedFlaw lets injected code run
  4. 4Code runsRuns as the current user, no clicks needed
  5. ResultAttacker runs arbitrary code on the system

What happened

A code injection flaw (CWE-94) in Adobe Campaign Classic allows arbitrary code execution in the context of the current user, reachable by a low-privileged attacker without user interaction, with scope changed.

Why it is dangerous: An attacker with only a low-privilege account could run code on the server, potentially reaching further than their own access. Organizations running Campaign Classic for marketing and customer messaging are at risk.

Are you affected?

You are affected if you run Adobe Campaign Classic (ACC) with a version that has not received Adobe's patch for this issue.

Adobe Campaign Classic (ACC) - specific affected versions not stated in the provided material.

What to do

  1. Check Adobe's security bulletin for Campaign Classic and identify your installed version
  2. Apply the Adobe Campaign Classic patch released for these flaws as soon as possible
  3. Restrict low-privilege account creation and review existing accounts until patched

Timeline

  1. 27 Oct 2026, 17:16 UTC
    Publicly disclosed
  2. 27 Oct 2026, 17:16 UTC
    Reported by NVD · NVD
  3. 27 Oct 2026, 17:20 UTC
    Picked up by Zero Radar
  4. 27 Oct 2026, 20:35 UTC
    GitHub Advisory reported on it · GitHub Advisory
  5. 28 Oct 2026, 11:22 UTC
    The Hacker News reported on it · The Hacker News
  6. 28 Oct 2026, 11:22 UTC
    Fix: Adobe has released patches for this and seven other critical Campaign Classic flaws; the specific fixed version numbers are not stated in the provided material.

Sources 3 reports, oldest first

Official vendor, government CERT or advisory database

Security press established security newsrooms

Technical details

ID
CVE-2026-104351 · GHSA-2pq5-jv73-pp93
CVSS
9.9 / 10
EPSS
0.6% chance of exploitation within 30 days
Disclosed
27 Oct 2026, 17:16 UTC
On Zero Radar
27 Oct 2026, 17:20 UTC (4 min after disclosure)
Last change
28 Oct 2026, 11:22 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Adobe Campaign Classic: code injection lets low-privilege users run code · Zero Radar