Description

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.5.0.rc3, a vulnerability has been discovered in BACnet Stack's file writing functionality where there is no validation of user-provided file paths, allowing attackers to write files to arbitrary directories. This affects apps/readfile/main.c and ports/posix/bacfile-posix.c. This vulnerability is fixed in 1.5.0.rc3.

INFO

Published Date :

2026-02-13T18:10:26.325Z

Last Modified :

2026-02-13T18:53:59.648Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-21878 vulnerability.

Vendors Products
Bacnetstack
  • Bacnet Stack
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-21878.

URL Resource
https://github.com/bacnet-stack/bacnet-stack/commit/c5dc00a77b4bc2550befa67a930b333e299c18f3 cve-icon cve-icon
https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-p8rx-c26w-545j cve-icon cve-icon
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CVSS Vulnerability Scoring System

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