CVE-2022-43391

high-risk
Published 2023-01-11

A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted HTTP request.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Lte3301-Plus Firmware
Lte5388-M804 Firmware
Lte5398-M904 Firmware
Lte7240-M403 Firmware
Lte7461-M602 Firmware
Lte7480-M804 Firmware
Lte7480-S905 Firmware
Lte7485-S905 Firmware
Lte7490-M904 Firmware
Nebula Lte3301-Plus Firmware
Nebula Lte7461-M602 Firmware
Nebula Nr5101 Firmware
Nebula Nr7101 Firmware
Nr5101 Firmware
Nr7101 Firmware
Nr7102 Firmware
Dx4510-B1 Firmware

Affected Vendors

Zyxel

References (2)

Vendor Advisory https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis...
Vendor Advisory https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis...
53
/ 100
high-risk
Severity 24/34 · High
Exploitability 4/34 · Minimal
Exposure 25/34 · High