What’s Vulnerable › Vulnerabilities

CVE-2021-39290

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-23 · updated 2026-06-17
• Weakness: CWE-384

Description

Certain NetModule devices allow Limited Session Fixation via PHPSESSID. These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are affected: NB800, NB1600, NB1601, NB1800, NB1810, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800.

Affected products

• Netmodule Router Software: before 4.3.0.113; from 4.4.0.0 before 4.4.0.111; from 4.5.0.0 before 4.5.0.105 — fixed in 4.3.0.113, 4.4.0.111, 4.5.0.105

How to fix

Upgrade to a fixed version: Netmodule Router Software 4.3.0.113, 4.4.0.111, 4.5.0.105. Check the vendor advisory for mitigations.

References

• https://seclists.org/fulldisclosure/2021/Aug/22
• https://www.netmodule.com
• https://seclists.org/fulldisclosure/2021/Aug/22
• https://www.netmodule.com

Get alerted when CVE-2021-39290 or the next vulnerability affects your stack