Unauthenticated packet injection via spoofed link IDs
Published Jul 21, 2026 · Updated Jul 21, 2026
Authentication bypass in kronosnet 1.34 and earlier on Red Hat products allows remote attackers to inject arbitrary application-layer packets. The ACL receive path trusts the link ID in an incoming frame instead of validating its source address against the claimed link. Exploitation requires dynamic links that accept traffic from any IP and disabled payload encryption; injected data can corrupt application state or destabilize the service.
Summary
What happened
Authentication bypass in kronosnet 1.34 and earlier on Red Hat products allows remote attackers to inject arbitrary application-layer packets. The ACL receive path trusts the link ID in an incoming frame instead of validating its source address against the claimed link. Exploitation requires dynamic links that accept traffic from any IP and disabled payload encryption; injected data can corrupt application state or destabilize the service.
The record
- CVE
- CVE-2026-15812
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 10
- Classifications
- CWE-290, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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