CVE-2026-35091CWE-253

CVE-2026-35091

High · published April 1, 2026

CVSS v3.1
8.2
EPSS
1%
Percentile
65.3
In the wild
Unconfirmed
What it is

A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01094 · 65.3th percentile
Weakness
CWE-253 · Incorrect Check of Function Return Value
Published
2026-04-01T18:16Z
Affected products (6)
ProductVersionsFixed in
corosync/corosyncall versions—
redhat/openshiftall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (17)
EPSS history
Timeline
  • 01 APR 13:18Z
    Corosync: corosync: denial of service and information disclosure via crafted udp packet
    cvelistv5