How severe is CVE-2025-41765?

CVE-2025-41765 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-41765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-41765?

CVE-2025-41765 affects Mbs-solutions Universal Bacnet Router Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-41765?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-41765 have an EU (EUVD) identifier?

Yes. CVE-2025-41765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208376.

When was CVE-2025-41765 published?

CVE-2025-41765 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2025-41765

CVE-2025-41765 is a critical-severity vulnerability in Mbs-solutions Universal Bacnet Router Firmware with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208376
Weakness: CWE-862
Affected product: Mbs-solutions Universal Bacnet Router Firmware
Published: 2026-03-09
Last modified: 2026-06-17

Description

Due to insufficient authorization enforcement, an unauthorized remote attacker can exploit the wwwupload.cgi endpoint to upload and apply arbitrary data. This includes, but is not limited to, contact images, HTTPS certificates, system backups for restoration, server peer configurations, and BACnet/SC server certificates and keys.

Frequently asked questions

What is CVE-2025-41765?: Due to insufficient authorization enforcement, an unauthorized remote attacker can exploit the wwwupload.cgi endpoint to upload and apply arbitrary data. This includes, but is not limited to, contact images, HTTPS certificates, system backups for restoration, server peer configurations, and BACnet/SC server certificates and keys.
How severe is CVE-2025-41765?: CVE-2025-41765 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-41765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-41765?: CVE-2025-41765 affects Mbs-solutions Universal Bacnet Router Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-41765?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-41765 have an EU (EUVD) identifier?: Yes. CVE-2025-41765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208376.
When was CVE-2025-41765 published?: CVE-2025-41765 was published on 2026-03-09 and last updated on 2026-06-17.

References

https://www.mbs-solutions.de/mbs-2025-0001

Affected products (1)

cpe:2.3:o:mbs-solutions:universal_bacnet_router_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Mbs-solutions Universal Bacnet Router Firmware

CVE-2025-41764 — Critical (CVSS 9.1): Due to insufficient authorization enforcement, an unauthorized remote attacker can exploit the wwwupdate.cgi endpoint…
CVE-2025-41766 — High (CVSS 8.8): A low-privileged remote attacker can trigger a stack-based buffer overflow via a crafted HTTP POST request using the…
CVE-2025-41758 — High (CVSS 8.8): A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to…
CVE-2025-41757 — High (CVSS 8.8): A low-privileged remote attacker can abuse the backup restore functionality of UBR (ubr-restore) which runs with…
CVE-2025-41756 — High (CVSS 8.1): A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API…
CVE-2025-41761 — High (CVSS 7.8): A low‑privileged local attacker who gains access to the UBR service account (e.g., via SSH) can escalate privileges…

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