Improper Check for Unusual or Exceptional Conditions in ZyXEL Communications Corp. products - CVE-2022-43393

Vulnerability identifier: #VU71424

CSH Severity: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2022-43393

CWE-ID: CWE-754

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
GS1350-6HP
GS1350-12HP
GS1350-18HP
GS1350-26HP
GS1915-8
GS1915-8EP
GS1915-24E
GS1915-24EP
GS1920-24v2
GS1920-48v2
GS1920-24HPv2
GS1920-48HPv2
GS2220-10
GS2220-28
GS2220-50
GS2220-10HP
GS2220-28HP
GS2220-50HP
XGS1930-28
XGS1930-28HP
XGS1930-52
XGS1930-52HP
XS1930-10
XS1930-12HP
XS1930-12F
XGS2210-28
XGS2210-52
XGS2210-28HP
XGS2210-52HP
XGS2220-30
XGS2220-30HP
XGS2220-30F
XGS2220-54
XGS2220-54HP
XGS2220-54FP
XGS4600-32
XGS4600-32F
XGS4600-52F
XMG1930-30
XMG1930-30HP
XS3800-28
MGS3500-24S
MGS3520-28
MGS3520-28F
MGS3530-28

Software vendor:
ZyXEL Communications Corp.

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling in the HTTP request processing function. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dos-vulnerability-of-switches