🛡️ CVE-2023-51773 — bacnet-stack

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: None.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2023-51773 is classified as CWE-126: Buffer Over-read. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Affected software

CVE-2023-51773 is recorded against 1 package.

• bacnet-stack (fixed in 1.3.2)

Timeline and source

Published on 29 February 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
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sourceforge.net
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Other advisories for this package

bacnet-stack has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-41502 (7.5 High, published 24 Apr 2026)
• CVE-2026-41475 (9.1 Critical, published 24 Apr 2026)
• CVE-2026-41503 (7.5 High, published 24 Apr 2026)
• CVE-2026-40279 (3.7 Low, published 21 Apr 2026)
• CVE-2026-26264 (8.1 High, published 13 Feb 2026)
• CVE-2026-21878 (7.5 High, published 13 Feb 2026)
• CVE-2026-21870 (5.5 Medium, published 13 Feb 2026)
• CVE-2025-66624 (7.5 High, published 5 Dec 2025)

Same weakness in other software

These advisories are the same class of weakness (CWE-126: Buffer Over-read) in other software:

• CVE-2023-22385 (8.2 High, published 3 Oct 2023)
• CVE-2023-24848 (8.2 High, published 3 Oct 2023)
• CVE-2023-21667 (6.5 Medium, published 5 Sep 2023)
• CVE-2022-40524 (6.7 Medium, published 5 Sep 2023)
• CVE-2022-33220 (5.1 Medium, published 5 Sep 2023)
• CVE-2023-21625 (8.2 High, published 8 Aug 2023)
• CVE-2023-23571 (7.5 High, published 6 Jul 2023)
• CVE-2023-21658 (7.5 High, published 6 Jun 2023)

Details

Affected Packages

References