CVE-2026-59786
Active agent heartbeat missing TLS check
No known exploitation. EPSS puts it in the 10th percentile. A vendor fix is available.
No public exploit knownFixVendor fixNo build named by the sources
No ready-made check. Neither Nuclei nor OpenVAS has one for this CVE yet.
What to do
The vendor has published a fix. Version details are below where the sources state them.
- ZabbixAffected: ≥ 7.0.0, ≤ 7.0.28Upgrade to: after 7.0.28Affected: ≥ 7.4.0, ≤ 7.4.12Upgrade to: after 7.4.12Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 10th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
8 events over 1 day, from the signal feeds we watch.
- Patch availablerecord updated
- Patch availablepatch available, published, weakness classified, record updated, record updated
Affected products
Technical detail
Weaknesses
Sources
References in the record
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