What’s Vulnerable › Vulnerabilities
CVE-2026-78633: Denial of Service in Okta RADIUS Agent Packet Parser
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-13 · updated 2026-10-16
- Weakness: CWE-835
Description
The Okta RADIUS Agent does not validate the sub-attribute length when parsing a Vendor-Specific attribute. A sub-attribute length of zero causes the parser to loop indefinitely, resulting in worker-thread exhaustion and denial of new RADIUS authentication requests.
Affected products
- Okta RADIUS Agent: from 2.17.5 before 2.28.0 — fixed in 2.28.0
How to fix
Upgrade to a fixed version: Okta RADIUS Agent 2.28.0. Check the vendor advisory for mitigations.
References
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