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CVE-2026-21891

🗓️ 10 Jan 2026 05:40:31Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 20 Views

ZimaOS login flaw lets login with common system usernames; versions up to 1.5.0 unpatched.

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-21891
8 Jan 202615:00
–circl
cnnvd
CNNVD
ZimaOS security vulnerabilities
8 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-21891
8 Jan 202614:00
–cve
cvelist
Cvelist
CVE-2026-21891 ZimaOS has Authentication Bypass via System-Level Username
8 Jan 202614:00
–cvelist
euvd
EUVD
EUVD-2026-1670
8 Jan 202614:00
–euvd
kittysploit
KittySploit
ZimaOS - Authentication Bypass
28 Jul 202611:27
–kittysploit
mend
Mend
CVE-2026-21891
8 Jan 202614:00
–mend
nuclei
Nuclei
ZimaOS - Authentication Bypass
20 Oct 202602:05
–nuclei
nvd
NVD
CVE-2026-21891
8 Jan 202614:15
–nvd
ptsecurity
Positive Technologies
PT-2026-2122
8 Jan 202600:00
–ptsecurity
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10 Jan 2026 05:40Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.4 - 9.8
EPSS0.02316
SSVC
20