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CVE-2026-54410

nanoMODBUS Off-by-One Buffer Overflow in recv_msg_header() via Crafted MBAP Length Field PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
debevv / nanoMODBUSaffected 0 through 1.23.0

CWE

CWE-193, CWE-787

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.