EUVD-2026-46152
GHSA-36hw-mpc9-fw23
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Dual prerequisite of dynamic link mode plus disabled encryption justifies AC:H; unauthenticated spoofing needs no privileges; injection yields only integrity and availability impact.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability was found in the internal Access Control List (ACL) subsystem of kronosnet (Version affected: <= 1.34). When the framework is explicitly configured to manage dynamic links (accepting network traffic from any IP address) without network payload encryption, the validation architecture implicitly trusts the link ID provided within incoming data packets. A remote, unauthenticated attacker can exploit this lack of validation by spoofing a legitimate link ID inside crafted network frames. This allows the attacker to fully bypass the ACL framework and inject arbitrary data packets into the application layer, potentially leading to data corruption or service instabilities.
AnalysisAI
ACL bypass in kronosnet (versions ≤ 1.34) allows remote unauthenticated attackers to inject arbitrary data packets into cluster communication channels under a specific dual-condition deployment configuration. By spoofing a valid link ID in crafted network frames, an attacker circumvents the ACL subsystem entirely, potentially causing data corruption or service instabilities in clustering stacks shipped with Red Hat Enterprise Linux 8, 9, 10 and OpenShift Container Platform 4. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Two specific non-default configuration conditions must both be present simultaneously: (1) kronosnet must be configured with dynamic link mode, meaning it is set to accept network traffic from any source IP address rather than a statically defined peer allowlist, and (2) network payload encryption must be explicitly disabled or left unconfigured. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.8 (Medium) with vector AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L is well-calibrated for this flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with layer-3 network access to the cluster's dedicated communication interfaces identifies that the target kronosnet instance is running in dynamic link mode without encryption by observing unencrypted cluster traffic. The attacker constructs network frames embedding a spoofed link ID matching a legitimate cluster peer and transmits them to the cluster endpoint. … |
| Remediation | No specific patched kronosnet version is identified in the available references; consult the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-15812 and track fix progress at https://bugzilla.redhat.com/show_bug.cgi?id=2500851 for updated package versions as they are released. … Detailed patch versions, workarounds, and compensating controls in full report. |
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View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Linux Enterprise High Availability Extension 16.0 | Affected |
| SUSE Linux Enterprise High Availability Extension 16.1 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Affected |
| openSUSE Leap 16.0 | Affected |
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