3.7Low
Zabbix Zabbix
CVE-2026-1199
Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.
What this means for your business
- It affects Zabbix. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Zabbix, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 3.7 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N- CVSS v4
- 6.9
- Weakness
- CWE-362
- Assigned by
- security@zabbix.com
Dates
- Published
- 2026-08-18
- Last modified
- 2026-09-08
- Sources
- NVD
Affected products
- Zabbix Zabbix6.0.0 - 6.0.47, 7.0.0 - 7.0.28, 7.4.0 - 7.4.12
As listed in the NVD configuration data. Not a statement about your estate.