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Vulnerability Details :

CVE-2025-49643

Summary
Assigner-Zabbix
Assigner Org ID-72de3e22-0555-4a0d-ae81-9249e0f0a1e8
Published At-01 Dec, 2025 | 13:05
Updated At-01 Dec, 2025 | 14:34
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Zabbix
Assigner Org ID:72de3e22-0555-4a0d-ae81-9249e0f0a1e8
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@zabbix.com
Published At:01 Dec, 2025 | 14:16
Updated At:06 Feb, 2026 | 15:28

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.0MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CPE Matches
ZABBIX
zabbix
>>frontend>>Versions from 6.0.0(inclusive) to 6.0.42(exclusive)
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
ZABBIX
zabbix
>>frontend>>Versions from 7.0.0(inclusive) to 7.0.19(exclusive)
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
ZABBIX
zabbix
>>frontend>>Versions from 7.2.0(inclusive) to 7.2.13(exclusive)
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
ZABBIX
zabbix
>>frontend>>Versions from 7.4.0(inclusive) to 7.4.3(exclusive)
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-405Secondarysecurity@zabbix.com
CWE ID: CWE-405
Type: Secondary
Source: security@zabbix.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://support.zabbix.com/browse/ZBX-27284security@zabbix.com
Vendor Advisory
Hyperlink: https://support.zabbix.com/browse/ZBX-27284
Source: security@zabbix.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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