Buffer overflow in ZyXEL Communications Corp. products - CVE-2023-27989
Published: June 6, 2023
Vulnerability identifier: #VU76985
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27989
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the CGI program. A remote user can send a specially crafted HTTP request, trigger memory corruption and cause a denial of service condition on the target system.
Affected software
LTE7480-M804
LTE7490-M904
NR7101
Nebula NR7101
LTE7490-M904
NR7101
Nebula NR7101
How to mitigate CVE-2023-27989
Install updates from vendor's website.
LTE7480-M804 - update to 1.00(ABRA.7)C0
LTE7490-M904 - update to 1.00(ABQY.6)C0
NR7101 - update to 1.00(ABUV.8)C0
LTE7490-M904 - update to 1.00(ABQY.6)C0
NR7101 - update to 1.00(ABUV.8)C0