SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-15132

Zabbix through 4.4.0alpha1 allows User Enumeration.

MEDIUM 5.3EPSS 2.03%

Does this matter?

Lower severity and a low EPSS score (2.03%). Track it; it rarely justifies an emergency change on its own.

Description

Zabbix through 4.4.0alpha1 allows User Enumeration. With login requests, it is possible to enumerate application usernames based on the variability of server responses (e.g., the "Login name or password is incorrect" and "No permissions for system access" messages, or just blocking for a number of seconds). This affects both api_jsonrpc.php and index.php.

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
2.03% probability · 81th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-203
Affected
zabbix/zabbix · debian/debian linux
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 2.03%27 October 202627 October 2026

EPSS 2.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.