CVE-2026-19908: PAX Technology Q80 XCB Daemon Missing Authentication Vulnerability

Severity: high (CVSS 7.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-09-01
Weakness: CWE-306

Description

PAX Technology Q80 XCB Daemon Missing Authentication Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information and modify configuration on affected installations of PAX Technology Q80. Authentication is not required to exploit this vulnerability. The specific flaw exists within the XCB daemon. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-30584.

Affected products

PAX Technology Q80: 2.6.33.6690R

References

https://www.zerodayinitiative.com/advisories/ZDI-26-524/

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