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Status published
High
CVE-2025-41761
Privilege escalation possible
Vulnerability Description
A low‑privileged local attacker who gains access to the UBR service account (e.g., via SSH) can escalate privileges to obtain full system access. This is due to the service account being permitted to execute certain binaries (e.g., tcpdump and ip) with sudo.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Adrien Rey from Cyber Defense Campus Zurich
- Daniel Hulliger from Armasuisse
References
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wwwupdate.cgi Session token in URL
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CVE-2025-41766
Stack buffer overflow on parsing web request
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8.8
CVE-2025-41765
Unchecked role in wwwupload.cgi
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CVE-2025-41764
Unchecked role in wwwupdate.cgi
Critical
9.1
Affected Vendor
Affected Software
UBR-01 Mk II, UBR-02, UBR-LON
Vulnerable Versions:
0.0.0
Timeline
Official Publish:
March 9th, 2026
Last Modified:
March 9th, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H