Bacnet Stack
Vendor:
First CVE: Feb 29, 2024 · Active for 2 years
9
Total CVEs
More Total CVEs than 86% of tracked products
3.0
Avg CVEs / Year
Higher CVE frequency than 76% of tracked products
7.3
Avg CVSS
Higher Avg CVSS than 46% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Bacnet Stack over time
Volume of CVEsAvg CVSS Base Score
First CVE
Feb 29, 2024
2 years ago
Most Recent CVE
Apr 24, 2026
92 days ago
CVE Severity & Scoring
Bacnet Stack9 CVEs
11%
11%
56%
22%
All CVEs352,427 CVEs
45%
40%
11%
LowMediumHighCritical
Attack Vector
Local1 (11.1%)
Network8 (88.9%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low8 (88.9%)
High1 (11.1%)
Unknown0 (0.0%)
User Interaction
None8 (88.9%)
Unknown0 (0.0%)
Required1 (11.1%)
Privileges Required
Low1 (11.1%)
High0 (0.0%)
None8 (88.9%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (9 CVEs).
9 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-41475CRITICAL BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an out-of-bounds read vulnerability in bacnet-stack's WritePropertyMultiple serv | Apr 24, 2026 | 9.1 | 28 | NO | NO |
CVE-2026-41503HIGH BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an out-of-bounds read vulnerability in bacnet-stack's ReadPropertyMultiple servi | Apr 24, 2026 | 7.5 | 25 | NO | NO |
CVE-2026-41502HIGH BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an off-by-one out-of-bounds read vulnerability in bacnet-stack's ReadPropertyMul | Apr 24, 2026 | 7.5 | 25 | NO | NO |
CVE-2026-21878HIGH 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 functiona | Feb 13, 2026 | 7.5 | 25 | NO | NO |
CVE-2025-66624HIGH BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services. Prior to 1.5.0.rc2, The npdu_is_expected_repl | Dec 5, 2025 | 7.5 | 25 | NO | NO |
CVE-2026-26264HIGH BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.5.0rc4 and 1.4.3rc2, a malformed WriteProperty request can trigger a length underflow | Feb 13, 2026 | 8.1 | 24 | NO | NO |
CVE-2023-51773CRITICAL BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c. | Feb 29, 2024 | 9.1 | 24 | NO | NO |
CVE-2026-21870MEDIUM BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services. In 1.4.2, 1.5.0.rc2, and earlier, an off-by-o | Feb 13, 2026 | 5.5 | 21 | NO | NO |
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, decode_signed32() in src/bacnet/bacint.c reconstructs a 32-bit signed integer fr | Apr 21, 2026 | 3.7 | 16 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (9 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (9 CVEs).
Media Mentions
Signals from CVEs in this product scope (9 CVEs).
Top CNAs Publishing CVEs For Bacnet Stack
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 1.5.0 | 7 | 7.7 | 0.4% | 0 | 0 |
| 1.4.3 | 1 | 8.1 | 0.4% | 0 | 0 |