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CVE-2025-49643

22
FAUCET Score

CVE-2025-49643 describes a denial-of-service vulnerability affecting the Zabbix frontend. An authenticated user, including guests, can exploit this by sending specially crafted parameters to the /imgstore.php endpoint, causing a disproportionate CPU load on the webserver. Rated Medium with a CVSS score of 6.5, this vulnerability has a low attack complexity and requires low privileges, leading to high availability impact. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, < 6.0.42CPE matchmatch criteria
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.19CPE matchmatch criteria
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
>= 7.2.0, < 7.2.13CPE matchmatch criteria
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
>= 7.4.0, < 7.4.3CPE matchmatch criteria
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
>= 6.0.0, <= 6.0.41CPE match
cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.0MEDIUM

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

Attack Vector
ADJACENT
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 29th percentile among its peer group of 21,951 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.zabbix.com / browse/ZBX-27284
Vendor Advisory