High severity · published Aug 4, 2026
CVE-2026-6837
A post-authentication command injection vulnerability in the "export-cgi" CGI program in Zyxel WAX650S firmware versions through 7.10(ABRM.4)C0 could allow an authenticated…
7.2
CVSS
1.5%
EPSS
No
On KEV
Description
A post-authentication command injection vulnerability in the "export-cgi" CGI program in Zyxel WAX650S firmware versions through 7.10(ABRM.4)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WF
WAX650S firmware · Zyxel
<= 7.10(ABRM.4)C0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6837
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6837
www.zyxel.com
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-improper-authentication-vulnerabilities-in-certain-aps-fwa7-and-security-routers-08-04-2026
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