PT-2025-48444 · Zabbix+3 · Zabbix+3

Published 2025-12-01 · Updated 2026-02-16 · CVE-2025-49643

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Zabbix (affected versions not specified)

Description An authenticated Zabbix user, including a Guest user, can cause a disproportionate CPU load on the webserver. This is achieved by sending specially crafted parameters to the /imgstore.php API endpoint, potentially leading to a denial of service. The vulnerable parameter is not explicitly identified, but it is part of the request sent to the /imgstore.php endpoint.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-405

Related Identifiers

ALT-PU-2025-15932

BDU:2025-15873

CVE-2025-49643

Affected Products

Alt Linux

Debian

Red Os

Zabbix

References · 26

• https://support.zabbix.com/browse/ZBX-27284 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-49643 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-49643 · Security Note
• https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-49643 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2026-0518SE47 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-49643 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-49643 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-15873 · Security Note
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-49643 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0421SE17 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-49643 · Vendor Advisory
• https://altsp.su/obnovleniya-bezopasnosti · Note
• https://twitter.com/CVEnew/status/1995491338218012835 · Twitter Post