CVE-2025-49643
Frontend DoS vulnerability due to asymmetric resource consumption
6.5CVSSMEDIUM
Description
An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
and 1 more affected products View all →
Exploitability
Official Patch Available
References
https://support.zabbix.com/browse/ZBX-27284
support.zabbix.com
https://altsp.su/obnovleniya-bezopasnosti/
altsp.su
https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18
wiki.astralinux.ru
and 4 more references View all →
Timeline
Published
Dec 1, 2025
Last Updated
Feb 6, 2026
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