PatchTheCVECVE-2026-59783: The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte
CVE-2026-59783 is a low-severity flaw (CVSS 2.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 2.3 (Low) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 87%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2026-10-05 |
| Last modified | 2026-10-06 |
Last updated 2026-10-06 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-59783?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-59783 being exploited?
CVE-2026-59783 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-59783 affect?
CVE-2026-59783 affects affected software. Severity is low (CVSS 2.3). The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix
How urgent is CVE-2026-59783?
Priority 11/100. No elevated risk signals yet.
Software pages
MySQL vulnerabilities · MariaDB vulnerabilities · Zabbix vulnerabilities