CVSS 3.1
8.2 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HCVE-2026-47258 BACnet Stack: Stack-based buffer overflow in Notification Class AddListElement recipient-list decoding
High (8.2) in bacnet-stack bacnet-stack. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
On this page
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.4, 1.5.1, and 1.6.0, a stack-based out-of-bounds write exists in the Notification Class object implementation when handling AddListElement for the recipient-list property. This issue has been patched in versions 1.4.4, 1.5.1, and 1.6.0.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 18th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWEs
- CWE-20 Improper Input Validation
CWE-121 Stack-based Buffer Overflow
CWE-129 Improper Validation of Array Index
CWE-787 Out-of-bounds Write - OWASP Top 10
- A05:2025 Injection
- Published
- Modified
- Assigned by
- GitHub_M (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Explain CVE-2026-47258 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-47258?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-47258?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-47258 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| bacnet-stack | < 1.4.4 |
| bacnet-stack | < 1.5.1 |
| bacnet-stack | < 1.6.0 |
Attack patterns (CAPEC)
- CAPEC-100 Overflow Buffers Likelihood: High · Severity: Very High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-20 (51).