🛡️ CVE-2026-54410

🟠 CVSS 8.6 — High ✅ No Known Exploit CWE-193 NVD
8.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header function of the Modbus/TCP server that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of the 260-byte receive buffer by sending a crafted MBAP frame whose Length field is set to 255.

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 low, integrity low, availability high.

Affected software

CVE-2026-54410 is recorded against 1 package.

  • unknown

Timeline and source

Published on 14 June 2026 and last revised on 10 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

cwe.mitre.org
cwe.mitre.org
github.com
github.com

Details

Severity HIGH
CVSS Score 8.6
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE CWE-193
Public Exploit ✅ No
Source NVD
Published 2026-06-14
Updated 2026-08-11
Modified 2026-08-10
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown

Similar Threats

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