Improper authentication in Zyxel LTE3301-M209
Priority MEDIUM 51CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
A flaw in the Zyxel LTE3301-M209 firmware verisons prior to V1.00(ABLG.6)C0 could allow a remote attacker to access the device using an improper pre-configured password if the remote administration feature has been enabled by an authenticated administrator.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01086 65th percentileScored 2026-11-07
Fix Fixed LTE3301-M209 (Zyxel): V1.00(ABLG.6)C0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Zyxel | LTE3301-M209 | before V1.00(ABLG.6)C0 | V1.00(ABLG.6)C0 | Patch available | CNA |
- LTE3301-M209 VendorZyxel Affected before V1.00(ABLG.6)C0 Fixed in V1.00(ABLG.6)C0 Patch available CNA
Remediation
- Fix · CNA LTE3301-M209 (Zyxel) Fixed in V1.00(ABLG.6)C0
Timeline
- 2026-10-02 Threatist record created from CVE-2022-40602
- 2026-10-03 Alias added: GHSA-rvh6-5433-qq87
References
Sources
- CVE-2022-40602 · CVE Program
- CVE-2022-40602 · NVD
- FIRST EPSS
- GHSA-rvh6-5433-qq87 · GitHub Advisory Database · CC BY 4.0
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