7.5
CVE-2026-21878
- EPSS 0.36%
- Veröffentlicht 13.02.2026 18:10:26
- Zuletzt bearbeitet 18.02.2026 18:49:16
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
LoginBACnet Stack Improperly Limits Pathnames to a Restricted Directory
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Bacnetstack ≫ Bacnet Stack Version1.5.0 Updaterc1
Bacnetstack ≫ Bacnet Stack Version1.5.0 Updaterc2
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.36% | 0.273 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| security-advisories@github.com | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
|
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-p8rx-c26w-545j
https://github.com/bacnet-stack/bacnet-stack/commit/c5dc00a77b4bc2550befa67a930b333e299c18f3