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CVE-2026-21870

🗓️ 13 Feb 2026 17:58:37Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

Off-by-one overflow in tokenizer_string of BACnet Stack writes null terminator past 40-byte buffer.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-21870
13 Feb 202617:58
attackerkb
Circl
CVE-2026-21870
3 Jun 202605:13
circl
CNNVD
BACnet Protocol Stack 安全漏洞
13 Feb 202600:00
cnnvd
Cvelist
CVE-2026-21870 The BACnet Protocol Stack library has an Off-by-one Stack-based Buffer Overflow in tokenizer_string
13 Feb 202617:58
cvelist
EUVD
EUVD-2026-5920
13 Feb 202617:58
euvd
NVD
CVE-2026-21870
13 Feb 202618:16
nvd
OSV
CVE-2026-21870 The BACnet Protocol Stack library has an Off-by-one Stack-based Buffer Overflow in tokenizer_string
13 Feb 202617:58
osv
Positive Technologies
PT-2026-8018
13 Feb 202600:00
ptsecurity
RedhatCVE
CVE-2026-21870
14 Feb 202619:22
redhatcve
Snyk
Off-by-one Error
13 Feb 202618:58
snyk
Rows per page
NVD
Vulners
Node
[
  {
    "vendor": "bacnet-stack",
    "product": "bacnet-stack",
    "versions": [
      {
        "version": "<= 1.4.2",
        "status": "affected"
      },
      {
        "version": ">= 1.5.0.rc1, <= 1.5.0.rc2",
        "status": "affected"
      }
    ]
  }
]

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18 Feb 2026 18:49Current
6Medium risk
Vulners AI Score6
CVSS 3.15.5
EPSS0.00007
SSVC
6