Quick answers
- Is CVE-2026-0435 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-0435 being exploited in the wild.
- How severe is CVE-2026-0435?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- AMD Secure Encrypted Virtualization (SEV) firmware.
- Is there a fix for CVE-2026-0435?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-0435 attacked?
- It is attacked from the adjacent network, in device firmware.
- Am I affected by CVE-2026-0435?
- Check whether you run Amd Secure Encrypted Virtualization (SEV) firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a use-after-free condition in AMD SEV firmware where a resource is accessed after it has been freed or released. An attacker with administrative privileges on the hypervisor could exploit this to manipulate guest device assignments, potentially allowing unauthorized access to guest data or tampering with guest I/O operations.
Affected products
- AMD Secure Encrypted Virtualization (SEV) firmware