Secuno
ENNL
Book demo

CVE-2026-54410

nanoMODBUS buffer overflow

8.6 HIGHEPSS 0.86%
  1. Published14 Jun 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1078158.5
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until…
CVE-2026-195708.8
The LE Audio Broadcast Sink in subsys/bluetooth/audio/bap_broadcast_sink.c copies…
CVE-2026-1079099.1
A heap-based out-of-bounds write in the ws_read_frame function (src/bolt/ws.c) and the…
CVE-2026-1079089.8
A heap-based out-of-bounds write in the BoltReadHandler function (src/bolt/bolt_api.c)…
CVE-2026-823448.1
IBM Guardium Data Protection 12.0, 12.1 is vulnerable to a heap-based buffer overflow…
CVE-2026-823358.1
IBM Guardium Data Protection 12.0, 12.1, 12.2 is vulnerable to a heap-based buffer…

Frequently asked

Is CVE-2026-54410 being actively exploited?

CVE-2026-54410 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.86%.

How severe is CVE-2026-54410?

CVE-2026-54410 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 0.86% probability of exploitation.

How do I fix CVE-2026-54410?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-54410 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.