CVE-2022-40622: wavlink wn531g3_firmware Missing Critical Step in Authentication
Vulnerability summary
CVE-2022-40622 is a high (CVSS 8.8) Missing Critical Step in Authentication vulnerability in wavlink wn531g3_firmware. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 13-09-2022PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The WAVLINK Quantum D4G (WN531G3) running firmware version M31G3.V5030.200325 uses IP addresses to hold sessions and does not not use session tokens. Therefore, if an attacker changes their IP address to match the logged-in administrator's, or is behind the same NAT as the logged in administrator, session takeover is possible.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.74%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
0.00 pp
From 0.74% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (youtu.be)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-304Missing Critical Step in AuthenticationThe product implements an authentication technique, but it skips a step that weakens the technique.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Wavlink1 product
- wn531g3_firmwareM31G3.V5030.200325 | ≤ m31g3.v5030.200325
1 vendor · 1 product