CVE-2026-49990
- Source
- https://cve.org/CVERecord?id=CVE-2026-49990
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49990.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-49990
- Aliases
-
- GHSA-8759-hx7g-94qx
- Published
- 2026-11-13T15:54:22Z
- Modified
- 2026-11-14T10:30:55Z
- Severity
-
- 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H CVSS Calculator
- Summary
- BACnet Stack: AtomicReadFile/AtomicWriteFile stream fileStartPosition validation flaw causes out-of-bounds read/write in RAM file backends
- Details
-
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. From versions 1.4.2 to before 1.4.5, and 1.5.0 to before 1.5.1, a signed fileStartPosition taken from AtomicReadFile and AtomicWriteFile stream-access requests is not validated tightly enough before it reaches the RAM file backends. Practical impact includes: reliable denial of service via process crash, out-of-bounds read that may expose adjacent memory contents, or out-of-bounds write that may corrupt heap memory and destabilize the process. This issue has been patched in versions 1.4.5 and 1.5.1.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-125", "CWE-787" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49990.json" }- References
Affected packages
Git / github.com/bacnet-stack/bacnet-stack
Affected ranges
- Type
- GIT
- Repo
- https://github.com/bacnet-stack/bacnet-stack
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "1.4.2" }, { "fixed": "1.4.5" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "1.5.0" }, { "fixed": "1.5.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" } ] }