CVE-2026-59786
🔶 mediumSummary
Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.
CVSS Score
-
EPSS Score
0.2
Exploit Probability
Published Date
2026-10-05
First Seen: 2026-10-08
🎯 CISA SSVC Assessment Updated: Oct 5, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Zabbix wants to thank Aditya Bisht for submitting this report on the HackerOne bug bounty platform. (reporter)
SSVC data provided by
CISA
Last Modified
2026-10-06
Source
NVD 🔗
CVSS Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE IDs (Weakness Types)