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Critical· 9.4official fix available

CVE-2026-33950

Signal K Server had a critical privilege escalation flaw that let anyone hit /enableSecurity and become an administrator. The bug was fixed in version 2.24.0‑beta.4. Users should update to that or newer version.

publishedApr 2, 2026
last modifiedJul 24, 2026
sourcesNVD
severity · cvss
9.4
critical · how bad it is
exploitation · epss
<1%
34th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 25, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Signal K Server, any version before 2.24.0‑beta.4, typically running on a boat’s central hub.

02

Real-world impact

An attacker could gain full admin rights, change routing data, tweak server settings, and access restricted endpoints, potentially compromising vessel safety.

03

Why this severity

The CVSS score of 9.4 reflects that the flaw is exploitable over the network with no authentication, gives complete control, and can lead to significant damage.

04

What to do about it

official fix available
recommended steps
  1. 011. Upgrade Signal K Server to version 2.24.0‑beta.4 or later.
  2. 022. Restart the Signal K Server service to apply the update.

NVD-referenced vendor advisory

05

Timeline

  1. Apr 2, 2026 · Apr 2, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 24, 2026 · 12d ago
    Advisory updated
    The NVD record was last revised.
  3. Jul 26, 2026 · 10d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactLow
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
CVE-2026-33950: Signal K Server had a critical privilege escalation flaw that let anyo · Vulnary