How severe is CVE-2025-41277?

CVE-2025-41277 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-41277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-41277?

CVE-2025-41277 affects Waterfall-security Wf-500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-41277?

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-2025-41277 have an EU (EUVD) identifier?

Yes. CVE-2025-41277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209997.

When was CVE-2025-41277 published?

CVE-2025-41277 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2025-41277

CVE-2025-41277 is a critical-severity vulnerability in Waterfall-security Wf-500 Firmware with a CVSS 3.x base score of 9.8. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209997
Weakness: CWE-78
Affected product: Waterfall-security Wf-500 Firmware
Published: 2026-05-29
Last modified: 2026-06-17

Description

Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in the Console WebUI in Waterfall WF-500 TX and RX Hosts in version 7.9.1.0 R2502171040 that allows remote unauthenticated attackers to execute arbitrary operating system commands on the device.

Frequently asked questions

What is CVE-2025-41277?: Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in the Console WebUI in Waterfall WF-500 TX and RX Hosts in version 7.9.1.0 R2502171040 that allows remote unauthenticated attackers to execute arbitrary operating system commands on the device.
How severe is CVE-2025-41277?: CVE-2025-41277 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-41277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-41277?: CVE-2025-41277 affects Waterfall-security Wf-500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-41277?: 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-2025-41277 have an EU (EUVD) identifier?: Yes. CVE-2025-41277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209997.
When was CVE-2025-41277 published?: CVE-2025-41277 was published on 2026-05-29 and last updated on 2026-06-17.

References

https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-41277

Affected products (1)

cpe:2.3:o:waterfall-security:wf-500_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Waterfall-security Wf-500 Firmware

CVE-2025-41276 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2025-41275 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2025-41274 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2025-41273 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-288: Authentication Bypass Using an Alternate Path or Channel in the Console…
CVE-2025-41272 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2025-41270 — Critical (CVSS 9.8): Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS…

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