What is CVE-2023-26793?

CVE-2023-26793 is a critical-severity vulnerability in Libmodbus, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2024-05-01.

How severe is CVE-2023-26793?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Libmodbus

CVE-2023-26793

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

Vulnerability class: Buffer Overflow

EPSS: 0.007 (50.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Libmodbus — versions 3.1.10
N/a — versions n/a

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-26793?: CVE-2023-26793 is a critical-severity vulnerability in Libmodbus, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2024-05-01.
How severe is CVE-2023-26793?: Critical severity. CVSS v3 base score is 9.8 out of 10.