CVE-2026-55400: Secure Access server vulnerability
CVE-2026-55400 is an integer underflow in Secure Access servers prior to version 14.57. Attackers with an authenticated session can send specially crafted traffic to a server in a non-default configuration and cause a persistent denial of service.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Secure Accessto a version that resolves this vulnerability.Fixed in 14.57Patch CVE-2026-55400
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55400?
CVE-2026-55400 has a risk level of 26, indicating a high severity vulnerability.
How do I fix CVE-2026-55400?
To fix CVE-2026-55400, upgrade your Secure Access server to version 14.57 or later.
What impact does CVE-2026-55400 have on Secure Access servers?
CVE-2026-55400 can cause a persistent denial of service on Secure Access servers with non-default configurations.
Who is affected by CVE-2026-55400?
CVE-2026-55400 affects Secure Access servers prior to version 14.57 that are running in specific configurations.
Can attackers exploit CVE-2026-55400 without authentication?
No, attackers need to have an authenticated session to exploit CVE-2026-55400.