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Vulnerabilities ›

CVE-2026-35091

High ⚡ Exploit Available

A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Co

CWE-253 — Weakness Type

                    Published: Apr 1, 2026                      ·  Modified: Apr 8, 2026                      ·  Source: NVD                

CVSS v3

8.2

🔗 NVD Official

📄 Description (English)

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.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 3

https://access.redhat.com/security/cve/CVE-2026-35091

secalert@redhat.com

Third Party Advisory VDB Entry

https://bugzilla.redhat.com/show_bug.cgi?id=2453169

secalert@redhat.com

Exploit Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2453813

secalert@redhat.com

📦 Affected Products / CPE 6 entries

corosync:corosync:-

redhat:openshift:4.0

redhat:enterprise_linux:7.0

redhat:enterprise_linux:8.0

redhat:enterprise_linux:9.0

redhat:enterprise_linux:10.0

📊 CVSS Score

8.2

/ 10.0 — High

📊 CVSS Vector

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

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityL — Low / Local

IntegrityN — None / Network

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score8.2

CWECWE-253

EPSS0.08%

Exploit ✓ Yes

Patch ✗ No

Published 2026-04-01

Source Feed nvd

Views 2

🏷️ Tags

CWE-253

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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