Buffer overflow in Mbs Ubr-01 Mk Ii
CVE-2025-41766
A low-privileged remote attacker can trigger a stack-based buffer overflow via a crafted HTTP POST request using the ubr-network method resulting in full device compromise.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (41.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Mbs Ubr-01 Mk Ii — versions 0.0.0
- Mbs Ubr-02 — versions 0.0.0
- Mbs Ubr-Lon — versions 0.0.0
- Mbs-Solutions Ubr-01 Mk Ii
- Mbs-Solutions Ubr-02
- Mbs-Solutions Ubr-Lon
- Mbs-Solutions Universal Bacnet Router Firmware
Weakness classification (CWE)
References
- www.mbs-solutions.de/mbs-2025-0001 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-41766?
- CVE-2025-41766 is a high-severity vulnerability in Mbs Ubr-01 Mk Ii, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-03-09.
- How severe is CVE-2025-41766?
- High severity. CVSS v3 base score is 8.8 out of 10.