CVE-2025-59824 Omni Wireguard SideroLink potential escape
Malicious Kubernetes workloads can bypass destination address validation on the SideroLink interface to access the management network.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-59824?
CVE-2025-59824 is a low-severity missing authorization vulnerability in siderolabs omni, published on 24 Sep 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to version 0.48.0, Omni Wireguard SideroLink has the potential to escape. Omni and each Talos machine establish a peer-to-peer (P2P) SideroLink connection using WireGuard to mutually authenticate and authorize access. The WireGuard interface on Omni is configured to ensure that the source IP address of an incoming packet matches the IPv6 address assigned to the Talos peer. However, it performs no validation on the packet's destination address. The Talos end of the SideroLink connection cannot be considered a trusted environment. Workloads running on Kubernetes, especially those configured with host networking, could gain direct access to this link. Therefore, a malicious workload could theoretically send arbitrary packets over the SideroLink interface. This issue has been patched in version 0.48.0.
Weakness: CWE-863
Which versions are affected by CVE-2025-59824?
3 open source packages ship an affected version, including github.com/siderolabs/omni. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/siderolabs/omni Go | All versions | 0.48.0 |
github.com/siderolabs/omni Go | All versions | 0.48.0 |
github.com/siderolabs/omni Go | All versions | 0.48.0 |
Products include Siderolabs Omni.
How do I fix CVE-2025-59824?
Upgrade github.com/siderolabs/omni to 0.48.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-59824 being exploited?
There is no known exploitation of CVE-2025-59824 in the wild and no public exploit code.
Other vulnerabilities in siderolabs omni
Sources
Also known as GHSA-hqrf-67pm-wgfq, GO-2025-3979.