Vulnerability · Published Aug 14, 2026 · Assigned by zdi

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

High 7.1

In plain English

A high-severity missing authentication in Q80 from PAX Technology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.0)7.1High

Exploit odds (30 days)0.4%top 70.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
PAX Technology	Q80	2.6.33.6690R

Weakness: CWE-306 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

References

ZDI-26-524 x_research-advisory