CVE-2025-49643
Published: 01 December 2025
Summary
CVE-2025-49643 is a medium-severity Amplification (CWE-405) vulnerability in Zabbix Frontend. Its CVSS base score is 6.0 (Medium).
Operationally, ranked at the 27.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-199985
Vulnerability details
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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Reduces impact of amplification attacks that overwhelm the primary site by allowing operations to shift to an equivalent alternate site.
Alternate services reduce the impact of amplification attacks that exhaust primary telecommunications resources.
Amplification attacks that exhaust the primary path are mitigated by the existence of an independent alternate path for command traffic.
Employs controls that mitigate amplification attacks causing asymmetric resource use.
Limits amplification effects by controlling how resources are allocated under high-volume or recursive load.