Cyber Resilience

CVE-2023-26793

CriticalPublic PoC

Published: 01 May 2024

Published
01 May 2024
Modified
05 May 2025
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0089 76.0th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-26793 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Libmodbus Libmodbus. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 24.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.

CWE(s)
CWE-122

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

libmodbus
libmodbus
3.1.10

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References