CVE-2025-49643

published 2025-12-01

CVE-2025-49643: An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to…

Priority P4 34 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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

11 ranges

Vendor	Product	Version range	Fixed in
debian	zabbix	< zabbix 1:7.0.22+dfsg-1 (forky)	zabbix 1:7.0.22+dfsg-1 (forky)
zabbix	frontend	>= 6.0.0 < 6.0.42	6.0.42
zabbix	frontend	>= 7.0.0 < 7.0.19	7.0.19
zabbix	frontend	>= 7.2.0 < 7.2.13	7.2.13
zabbix	frontend	>= 7.4.0 < 7.4.3	7.4.3
zabbix	zabbix	>= 0 < 1:7.0.22+dfsg-1~deb13u1	1:7.0.22+dfsg-1~deb13u1
zabbix	zabbix	>= 0 < 1:7.0.22+dfsg-1	1:7.0.22+dfsg-1
zabbix	zabbix	6.0.0 – 6.0.41	—
zabbix	zabbix	7.0.0 – 7.0.18	—
zabbix	zabbix	7.2.0 – 7.2.12	—
zabbix	zabbix	7.4.0 – 7.4.2	—

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 6.0 MEDIUM 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

osv 6.0 MEDIUM

vendor_debian 6.0 MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-405