Integer overflow in Corosync

CVE-2026-35092

A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to cras…

Vulnerability class: Integer Overflow

EPSS: 0.004 (58.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-35092?
CVE-2026-35092 is a high-severity vulnerability in Corosync, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-04-01.
How severe is CVE-2026-35092?
High severity. CVSS v3 base score is 7.5 out of 10.