CVE-2026-35092

HIGH

7.5

Description

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 crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/1/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-190

References

https://access.redhat.com/security/cve/CVE-2026-35092(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2453169(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2453814(secalert@redhat.com)

IOC Correlations

No correlations recorded

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