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CVE Vulnerability Details :
CVE-2025-49643
PUBLISHED
More InfoOfficial Page
Assigner-Zabbix
Assigner Org ID-72de3e22-0555-4a0d-ae81-9249e0f0a1e8
View Known Exploited Vulnerability (KEV) details
Published At-01 Dec, 2025 | 13:05
Updated At-01 Dec, 2025 | 14:34
Rejected At-
▼CVE Numbering Authority (CNA)
Frontend DoS vulnerability due to asymmetric resource consumption

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.

Affected Products
Vendor
ZABBIXZabbix
Product
Zabbix
Repo
https://git.zabbix.com/
Modules
  • Frontend
Default Status
unknown
Versions
Affected
  • From 6.0.0 through 6.0.41 (git)
    • -> unaffectedfrom6.0.42
  • From 7.0.0 through 7.0.18 (git)
    • -> unaffectedfrom7.0.19
  • From 7.2.0 through 7.2.12 (git)
    • -> unaffectedfrom7.2.13
  • From 7.4.0 through 7.4.2 (git)
    • -> unaffectedfrom7.4.3
Problem Types
TypeCWE IDDescription
CWECWE-405CWE-405: Asymmetric Resource Consumption (Amplification)
Type: CWE
CWE ID: CWE-405
Description: CWE-405: Asymmetric Resource Consumption (Amplification)
Metrics
VersionBase scoreBase severityVector
4.06.0MEDIUM
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 6.0
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-490CAPEC-490: Amplification
CAPEC ID: CAPEC-490
Description: CAPEC-490: Amplification
Solutions

Update the affected components to their respective fixed versions.

Configurations

An authenticated user sending crafted HTTP requests to Zabbix Frontend.

Workarounds
Exploits
Credits
reporter
Zabbix wants to thank Pamparau Sebastian (sebiee) for submitting this report on the HackerOne bug bounty platform.
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://support.zabbix.com/browse/ZBX-27284
N/A
Hyperlink: https://support.zabbix.com/browse/ZBX-27284
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found