CVE-2022-23131
Zabbix Frontend Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 8 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default).
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 95.68% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 22 February 2022 · due 8 March 2022
- Weakness
- CWE-290
- Affected
- zabbix/zabbix
- Source
- security@zabbix.com
EPSS 95.7% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2022-23131
References
- https://support.zabbix.com/browse/ZBX-20350Issue Tracking, Patch, Vendor Advisory
- https://support.zabbix.com/browse/ZBX-20350Issue Tracking, Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.