Critical CVSS 9.3
CVE-2026-16822
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to impersonate the TNC policy server and modify traffic due to improper certificate validation.
What this means
- Exposure
- Exploitable remotely over the network, without authentication and with no action from the victim.
- Impact
- An attacker can read some data and modify or destroy data. The impact spreads beyond the vulnerable component into other parts of the system.
- Weakness
- The TLS certificate is not properly validated, making traffic interception possible.
- Likelihood
- Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.
What to doPatch without waiting for the next scheduled cycle. Start with the instances exposed to the internet.
Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.