+44 1865 950 828 Secure Your Business
Actively exploited

CVE-2022-23134 Zabbix Frontend Improper Access Control Vulnerability

Malicious actors can pass step checks and potentially change the configuration of Zabbix Frontend.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch urgentlyCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 22 Feb 2022.
  • Rated Low severity (CVSS 3.7, scored by Vendor).
  • It has been in the catalogue for 1,718 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

After the initial setup process, some steps of setup.php file are reachable not only by super-administrators, but by unauthenticated users as well. Malicious actor can pass step checks and potentially change the configuration of Zabbix Frontend.

Affected Versions

ProductVersions
Zabbix Frontend5.4.0 - 5.4.8

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Zabbix Frontend. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply updates per vendor instructions.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsCyber Essentials requires high and critical updates (CVSS 7.0 or above) within 14 days of release. Treat any exploited flaw the same way.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 8 Mar 2022 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Zabbix Flaws

Get alerts for ZabbixWe email you when a new Zabbix vulnerability is confirmed as exploited. Add more vendors on Threat Watch.

By signing up you agree to receive Threat Watch alerts. Unsubscribe at any time. See our Privacy Policy.

CVE-2022-23131Zabbix Frontend Authentication Bypass VulnerabilityAdded 22 Feb 2022

All 2 exploited Zabbix vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2022-23134 and every other exploited flaw on the list.

Check My Exposure
Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2022-23134
  3. CVE record: CVE-2022-23134
  4. FIRST EPSS
  5. support.zabbix.com/browse/ZBX-20384
  6. lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6SZYHXINBKC
  7. lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VB6W556GVXO
  8. lists.debian.org/debian-lts-announce/2022/02/msg00008.html