CVE-2025-41273: Nozomi Networks Labs identified a CWE-288: Authentication Bypass Using an Alternate Path or Channel in the Con

Q: How do I fix CVE-2025-41273?

wf-500 firmware: upgrade to newer than 7.9.1.0_r2502171040. Exact commands for each OS are on this page.

Q: Is CVE-2025-41273 being exploited?

CVE-2025-41273 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-41273 affect?

CVE-2025-41273 affects wf-500 firmware. Severity is critical (CVSS 9.8). Nozomi Networks Labs identified a CWE-288: Authentication Bypass Using an Alternate Path or Channel 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 bypa

Q: How urgent is CVE-2025-41273?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-41273 is a critical-severity flaw (CVSS 9.8) affecting wf-500 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nozomi Networks Labs identified a CWE-288: Authentication Bypass Using an Alternate Path or Channel 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 bypass authentication of the Console web application and perform actions as an authenticated user.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-288
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): Nozomi Networks Inc. · Vendor: waterfall-security

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 12:16 UTCPublished CVE record published
2026-07-21 12:10 UTCUpdated Record last modified

waterfall-security wf-500 firmware UPGRADE

Affected: <= 7.9.1.0_r2502171040

Fixed in: newer than 7.9.1.0_r2502171040

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-41273?

wf-500 firmware: upgrade to newer than 7.9.1.0_r2502171040. Exact commands for each OS are on this page.

Is CVE-2025-41273 being exploited?

CVE-2025-41273 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-41273 affect?

CVE-2025-41273 affects wf-500 firmware. Severity is critical (CVSS 9.8). Nozomi Networks Labs identified a CWE-288: Authentication Bypass Using an Alternate Path or Channel 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 bypa

How urgent is CVE-2025-41273?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-41269 CRITICAL 9.8 UPGRADE Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('
CVE-2025-41270 CRITICAL 9.8 UPGRADE Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('
CVE-2025-41272 CRITICAL 9.8 UPGRADE Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('
CVE-2025-41274 CRITICAL 9.8 UPGRADE Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('
CVE-2025-41275 CRITICAL 9.8 UPGRADE Nozomi Networks Labs identified a CWE-78: Improper Neutralization of Special Elements used in an OS Command ('

References

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