CVE-2022-23134: Zabbix Frontend Improper Access Control Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 22 Feb 2022, 40 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 95.3%
EPSS score, percentile 99.9 of all scored records
- How severe?
- 3.7 Low
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA deadline 8 Mar 2022. Apply updates per vendor instructions.
- Which versions are affected?
Affected
- 5.4.0 - 5.4.8
Unaffected 5.4.9
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: 8 March 2022.
Solution (from the CVE record)
To remediate this vulnerability, apply the updates or if an immediate update is not possible, follow the presented workarounds.
Workaround (from the CVE record)
If an immediate update is not possible, please remove the setup.php file
Advisories and patches
Linked from CISA's catalog entry
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 5.4.0 - 5.4.8 |
| Unaffected | 5.4.9 |
Versions the record lists as unaffected: 5.4.9.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
Malicious actors can pass step checks and potentially change the configuration of Zabbix Frontend.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2022-23134 to its Known Exploited Vulnerabilities (KEV) catalog on 22 Feb 2022.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 8 Mar 2022.
- The CVE record was published on 13 Jan 2022, 40 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 3.7 (Low), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 95.3% (percentile 99.9), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact partial.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
Possible view of the setup pages by unauthenticated users if config file already exists
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.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
- CWE-284: Improper Access Control
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 13 Jan 2022 | CVE record published |
| 22 Feb 2022 | Added to CISA KEV |
| 8 Mar 2022 | CISA due date for the required action |
| 21 Oct 2025 | CVE record last updated |
References
More exploited Zabbix vulnerabilities
- CVE-2022-23131: Zabbix Frontend Authentication Bypass Vulnerability