CVE-2025-43926 Affecting znuny package, versions <6.5.15-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 Aug 2026
- disclosed8 May 2025
Introduced: 8 May 2025
CVE-2025-43926 (opens in a new tab)How to fix?
Upgrade Echo:latest znuny to version 6.5.15-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream znuny package and not the znuny package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
An issue was discovered in Znuny through 6.5.14 and 7.x through 7.1.6. Custom AJAX calls to the AgentPreferences UpdateAJAX subaction can be used to set user preferences with arbitrary keys. When fetching user data via GetUserData, these keys and values are retrieved and given as a whole to other function calls, which then might use these keys/values to affect permissions or other settings.