MEDIUMCVSS v3.1 6.5Vulnerability
CVE-2026-58265
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, a BACnet/SC peer can trigger a heap out-of-bounds read (up to 3 bytes), pre-authentication, in the BACnet/SC header-option decoder. bvlc_sc_decode_proprietary_option() reads the vendor-id and option-type at fixed offsets [3],[4],[5] before checking the option's declared header length, and the option-list validator never enforces a minimum length for proprietary options. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Cvss score
- 6.5
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-14T00:50:05+00:00
- Score
- 6.5
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-58265
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- Published at
- 2026-11-13T16:19:12.393
- Last modified
- 2026-11-13T22:11:32.147
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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