What is CVE-2026-48690?

CVE-2026-48690 is a high-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2026-05-26.

How severe is CVE-2026-48690?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Pavel-odintsov Fastnetmon

CVE-2026-48690

FastNetMon Community Edition through 1.2.9 contains an integer overflow vulnerability in the packet capture buffer allocation. In src/packet_storage.hpp, the allocate_buffer() function computes memory_size_in_bytes as 'buffer_size_in_packe…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (2.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Pavel-odintsov Fastnetmon
N/a — versions n/a

Weakness classification (CWE)

References

cve@mitre.org (Product)
cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-48690?: CVE-2026-48690 is a high-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2026-05-26.
How severe is CVE-2026-48690?: High severity. CVSS v3 base score is 7.1 out of 10.