CVE-2026-42924: Privilege Escalation in F5 BIG-IP

Successful exploitation of CVE-2026-42924 allows an attacker to elevate their privileges within the F5 BIG-IP environment. This means an attacker who already has basic administrative access could gain full control over the system, potentially leading to data breaches, denial of service, or complete system compromise. The ability to manipulate SNMP configuration objects through iControl SOAP provides a direct pathway to escalate privileges, bypassing standard access controls. The impact is significant, as it allows an attacker to operate with the highest level of permissions on the BIG-IP device.

1. 予約済み2026-04-30
2. 公開日2026-05-13

The primary mitigation for CVE-2026-42924 is to upgrade to F5 BIG-IP version 21.0.0.1 or later, which contains the fix. If an immediate upgrade is not feasible, consider implementing stricter access controls within iControl SOAP to limit the ability of administrators to create SNMP configuration objects. Review existing SNMP configurations for any anomalies. While not a direct fix, restricting access to the iControl SOAP interface can reduce the attack surface. After upgrade, confirm the vulnerability is resolved by attempting to create an SNMP configuration object via iControl SOAP with a lower-privileged account.