CVE-2026-35091
April 1, 2026, 2:23 p.m.
8.2
High
Description
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. This vulnerability affects Corosync when running in totemudp/totemudpu mode, which is the default configuration.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Corosync |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-253
Incorrect Check of Function Return Value
The product incorrectly checks a return value from a function, which prevents it from detecting errors or exceptional conditions.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | corosync | corosync | / | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: LOW
- Integrity Impact: NONE
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Timeline
Published: April 1, 2026, 2:16 p.m.
Last Modified: April 1, 2026, 2:23 p.m.
Last Modified: April 1, 2026, 2:23 p.m.
Status : Undergoing Analysis
CVE is currently being analyzed by NVD staff, this process results in association of reference link tags, CVSS scores, CWE association, and CPE applicability statements.
More infoSource
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.