by Kastro
Paper/Archive/CVE-2026-124002

CVE-2026-124002

Copeland XWEB EVO — Dixell/Copeland XWEB EVO Pre-Auth OS Command Injection via Username

CVSS 9.8
critical.is priorityof 100
29
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

XWEB EVO versions 5.2.3 through before 5.7.0 contains a pre-authentication OS command injection vulnerability that allows unauthenticated remote attackers to execute arbitrary OS commands by injecting shell metacharacters into the username field of login.lua, cleanout.lua, or api.lua before the password check occurs. Attackers can exploit this flaw combined with the setuid-root wlua interpreter to execute commands with root privileges, achieving full system compromise. This product line reached it's end of service date in March 2026.

Affected

ProductAffectedFixed inSource
XWEB EVO5.2.3 – < 5.7.05.7.0CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

patchwebapps.copeland.com/Dixell/Pages/SystemSoftwareUpdatewriteupvulncheck.com/advisories/dixell-copeland-xweb-evo-pre-authentication-os-command-injection-via-username