CVE-2026-21878

HIGH

7.5

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung7.5

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht2/13/2026

Zuletzt geandert2/18/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

bacnetstack:bacnet_stack

Schwachen (CWE)

CWE-22

Referenzen

https://github.com/bacnet-stack/bacnet-stack/commit/c5dc00a77b4bc2550befa67a930b333e299c18f3(security-advisories@github.com)

https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-p8rx-c26w-545j(security-advisories@github.com)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.