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CVE-2026-25228Disclosure(microsoft / signal_k_server)

LOWCVSS 4.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft signal_k_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Signal K Server is a server application that runs on a central hub in a boat. Prior to 2.20.3, a path traversal vulnerability in SignalK Server's applicationData API allows authenticated users on Windows systems to read, write, and list arbitrary files and directories on the filesystem. The validateAppId() function blocks forward slashes (/) but not backslashes (\), which are treated as directory separators by path.join() on Windows. This enables attackers to escape the intended applicationData directory. This vulnerability is fixed in 2.20.3.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • signal_k_server
  • windows

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-02-02); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
microsoftsignalk
Products
signal_k_serverwindows

1 version affected across 2 products

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-02: 2Mentions · 2026-02-03: 1Patch / Workaround · 2026-02-02: 1Technical Details · 2026-02-02: 2Technical Details · 2026-02-03: 102-0202-03
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-022
Disclosure2
2026-02-031
Disclosure1
Full discourse3 posts
  • cvereports@_cvereports
    Disclosure

    CVE-2026-25228: Lost at Sea: Windows Path Traversal in Signal K Server A classic 'Linux-brain' implementation error in Signal K Server exposes Windows installations to directory traversal. By failing to sanitize backslashes in the `applicationData` AP... https://cvereports.com/reports/CVE-2026-25228

    Post summary

    The post announces a new CVE-2026-25228 Windows path traversal flaw in Signal K Server caused by improper backslash handling, highlighting the vulnerability's technical details without evidence of exploitation or mitigation.

    0000038
    27 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-25228 Path Traversal in Signal K Server on Windows Enabling Unauthorized File Access https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-25228

    Post summary

    CVE-2026-25228 is a disclosed path traversal flaw in Signal K Server on Windows, enabling unauthorized file access; the text provides the vulnerability type but no PoC, exploit, patch, or active exploitation details.

    0000053
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-25228 Signal K Server is a server application that runs on a central hub in a boat. Prior to 2.20.3, a path traversal vulnerability in SignalK Server's applicationData API … https://www.cve.org/CVERecord?id=CVE-2026-25228

    Post summary

    CVE-2026-25228 is a path traversal flaw in Signal K Server's applicationData API, fixed in version 2.20.3.

    00000113
    56.5K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows---
Appsignalksignal_k_server---

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