CVE-2022-40494
CWE-287Published: October 6, 2022· Updated: Jun 17, 2026
Official Description
NPS before v0.26.10 was discovered to contain an authentication bypass vulnerability via constantly generating and sending the Auth key and Timestamp parameters.
Risk Analysis
NPS contains a critical authentication bypass vulnerability that allows unauthorized access by manipulating authentication parameters. The flaw is remotely exploitable without authentication, resulting in a CVSS score of 9.8.
There is no known public exploit for this vulnerability, and it is not listed in the CISA KEV catalog.
Update the NPS software to version 0.26.10 or later to resolve the authentication bypass issue.
Technical Analysis
CVE-2022-40494 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-287)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-40494 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts