What is CVE-2026-22627?

CVE-2026-22627 is a high-severity vulnerability in Fortinet Fortiswitchaxfixed, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-03-10.

How severe is CVE-2026-22627?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Fortinet Fortiswitchaxfixed

CVE-2026-22627

A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiSwitchAXFixed 1.0.0 through 1.0.1 may allow an unauthenticated attacker within the same adjacent network to execute unauthorized code or commands on the device via sending a crafted LLDP packet.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (20.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fortinet Fortiswitchaxfixed — versions 1.0.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

psirt@fortinet.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-22627?: CVE-2026-22627 is a high-severity vulnerability in Fortinet Fortiswitchaxfixed, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-03-10.
How severe is CVE-2026-22627?: High severity. CVSS v3 base score is 8.8 out of 10.