How severe is CVE-2025-41758?

CVE-2025-41758 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-41758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-41758?

CVE-2025-41758 affects Mbs-solutions Universal Bacnet Router Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-41758?

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

Does CVE-2025-41758 have an EU (EUVD) identifier?

Yes. CVE-2025-41758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208362.

When was CVE-2025-41758 published?

CVE-2025-41758 was published on 2026-03-09 and last updated on 2026-06-17.

CVE-2025-41758

CVE-2025-41758 is a high-severity vulnerability in Mbs-solutions Universal Bacnet Router Firmware with a CVSS 3.x base score of 8.8. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208362
Weakness: CWE-22
Affected product: Mbs-solutions Universal Bacnet Router Firmware
Published: 2026-03-09
Last modified: 2026-06-17

Description

A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to path traversal this can lead to overwriting arbitrary files on the device and achieving a full system compromise.

Frequently asked questions

What is CVE-2025-41758?: A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to path traversal this can lead to overwriting arbitrary files on the device and achieving a full system compromise.
How severe is CVE-2025-41758?: CVE-2025-41758 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-41758 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-41758?: CVE-2025-41758 affects Mbs-solutions Universal Bacnet Router Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-41758?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-41758 have an EU (EUVD) identifier?: Yes. CVE-2025-41758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208362.
When was CVE-2025-41758 published?: CVE-2025-41758 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-2025-41765 — Critical (CVSS 9.1): Due to insufficient authorization enforcement, an unauthorized remote attacker can exploit the wwwupload.cgi endpoint…
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-2025-41757 — 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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