TL;DR
The Paths model rates this MONITOR because a logging deficiency is the absence of a control, not an exploit primitive. It confers no reachability, authority, data, or physical effect of its own. The published 10.0 Critical baseline is retained for source review because it imports consequences from other bugs onto this one.
What it is
CVE-2024-48967 is insufficient audit logging on the Life2000 ventilator and its Service PC. It is a detection/forensics gap. You cannot “exploit” the absence of a log; at most it lets an attacker who already compromised the device via another flaw stay undetected. (CISA ICSMA-24-319-01.)
Published baseline — scope note
The advisory assigns AV:N and C:H/I:H/A:H → 10.0. Two structural errors: (1) impact double-counting — the “undetected unauthorized setting changes” impact belongs to the firmware/auth/serial CVEs and is already counted there; importing it here scores the same harm twice. (2) AV:N on a forensics gap is incoherent — there is no network path by which one “reaches” a missing log. This is the device-class ratchet: because it is a ventilator-adjacent control gap, the score floats to the ceiling regardless of the flaw’s own nature.
Consequence driver
The Paths model highlights dimension #5 (absence-of-control ≠ exploit): the lack of a safeguard is not itself the exploit primitive. Here the published baseline imports the hazard the missing control was meant to detect, double-counting impact against the real attack CVEs. A defense-in-depth gap is scored as if it were the attack it fails to stop. (This case is unusually clean because Baxter self-disclosed.)
Sources