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CVE-2026-21891

🗓️ 08 Jan 2026 14:00:14Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 78 Views

ZimaOS authentication bypass lets login with service usernames and any password up to 1.5.0.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-21891
8 Jan 202615:00
–circl
cnnvd
CNNVD
ZimaOS 安全漏洞
8 Jan 202600:00
–cnnvd
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
17 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
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-21891: Improper Authentication
8 Jan 202600:00
–rapid7
Rows per page
NVD
Vulners
Node
zimaspacezimaosRange≤1.5.0
[
  {
    "vendor": "IceWhaleTech",
    "product": "ZimaOS",
    "versions": [
      {
        "version": "<= 1.5.0",
        "status": "affected"
      }
    ]
  }
]

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17 Jun 2026 10:19Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.4 - 9.8
EPSS0.02316
SSVC
78