CVE-2026-54410

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Source
https://cve.org/CVERecord?id=CVE-2026-54410
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54410.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54410
Published
2026-06-14T17:10:12.275Z
Modified
2026-07-08T08:09:46.804527431Z
Severity
  • 7.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/AU:Y CVSS Calculator
Summary
[none]
Details

nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recvmsgheader() 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. The overflow corrupts the adjacent buffer-index field of the nanoMODBUS state structure, resulting in denial of service through invalid memory accesses and, on bare-metal and RTOS targets without memory protection, one-byte information disclosure and writes to unintended register addresses on the Write Multiple Registers (FC16) handler path.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54410.json",
    "cna_assigner": "TuranSec",
    "cwe_ids": [
        "CWE-193",
        "CWE-787"
    ]
}
References

Affected packages

Git / github.com/debevv/nanomodbus

Affected ranges

Type
GIT
Repo
https://github.com/debevv/nanomodbus
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
91d6782930ee263bc760f27b0cbc5b82773c5f0d
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.23.0"
        },
        {
            "fixed": "v1.23.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v1.*
v1.0
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.10.0
v1.11.0
v1.12.0
v1.12.1
v1.13.0
v1.14.0
v1.14.1
v1.14.2
v1.14.3
v1.15.0
v1.16.0
v1.17.0
v1.17.1
v1.17.2
v1.17.3
v1.18.1
v1.19.0
v1.2.0
v1.2.1
v1.20.0
v1.20.1
v1.21.0
v1.22.0
v1.22.1
v1.3.0
v1.3.1
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.8.1
v1.9.0
v1.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54410.json"