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VulnerabilityPublished Updated

CVE-2026-22627: Fortinet FortiSwitchAXFixed · Execute Unauthorized Code or Commands

Affects Fortinet FortiSwitchAXFixedSource CVE Database V5

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Not known to be exploited · CVSS 7.7 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
FortinetFortiSwitchAXFixedAffected
  • >=1.0.0 <=1.0.1
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:fortinet:fortiswitchaxfixed:1.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:fortinet:fortiswitchaxfixed:1.0.0:*:*:*:*:*:*:*

AI-suggested

Organizations should immediately implement network segmentation to isolate FortiSwitchAXFixed devices and restrict LLDP traffic to trusted management stations and devices only. Deploy access control lists (ACLs) or firewall rules to block unauthorized LLDP packets from untrusted sources. Monitor network traffic for anomalous or malformed LLDP packets indicative of exploitation attempts. Fortinet users should stay alert for official patches or firmware updates addressing this vulnerability and apply them promptly once available. Until patches are released, consider disabling LLDP on interfaces where it is not strictly necessary. Conduct thorough network device audits to identify all affected FortiSwitchAXFixed devices and prioritize remediation efforts. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics capable of detecting exploitation attempts targeting LLDP-based buffer overflows. Finally, maintain robust incident response plans to quickly contain and remediate any compromise resulting from this vulnerability.

Description

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.

References

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