CVE-2026-45550Public exploitNetwork attack vector

Cross-tenant monitor rewriting via unchecked check identifier

Published Jun 10, 2026 · Updated Jun 10, 2026

Incorrect authorization in Roxy-WI 8.2.6.4 and earlier allows remote authenticated users to rewrite other tenants' monitoring checks. PUT /smon/check accepts a caller-controlled check_id after confirming only that the caller has a group, while the update queries match only smon_id and omit user_group ownership. Any authenticated role, including guest, can enumerate identifiers to repoint HTTP, TCP, Ping, or DNS monitors, creating monitoring blind spots and limited data exposure.

CVSS severity9.1
Critical
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Roxy-WI 8.2.6.4 and earlier allows remote authenticated users to rewrite other tenants' monitoring checks. PUT /smon/check accepts a caller-controlled check_id after confirming only that the caller has a group, while the update queries match only smon_id and omit user_group ownership. Any authenticated role, including guest, can enumerate identifiers to repoint HTTP, TCP, Ping, or DNS monitors, creating monitoring blind spots and limited data exposure.

The record

CVE
CVE-2026-45550
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Roxy-WI
Product
Roxy-WI
Classifications
CWE-863, CWE-862, CWE-639, T1562.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 8.2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Roxy-WI · Roxy-WIversion=<= 8.2.6.4

Published CVSS scores

9.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-862Missing Authorization
CWE-639Authorization Bypass Through User-Controlled Key
T1562.001Impair Defenses: Disable or Modify Tools

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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