CVSS 3.1
7.6 highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:LCVE-2024-3661
High (7.6). EPSS 4.1% chance of exploitation in the next 30 days.
DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.
Severity
- EPSS
- 4.1% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-306, CWE-501
- Published
- Modified
- Record from
- the NVD, synced
Affected
- cisco:anyconnect_vpn_client
- cisco:secure_client
- citrix:secure_access_client
- f5:big-ip_access_policy_manager
- fortinet:forticlient
- paloaltonetworks:globalprotect
- watchguard:ipsec_mobile_vpn_client
- watchguard:mobile_vpn_with_ssl
- zscaler:client_connector
References
- https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/
- https://bst.cisco.com/quickview/bug/CSCwk05814
- https://datatracker.ietf.org/doc/html/rfc2131#section-7
- https://datatracker.ietf.org/doc/html/rfc3442#section-7
- https://fortiguard.fortinet.com/psirt/FG-IR-24-170