# CVE-2026-78633: Denial of Service in Okta RADIUS Agent Packet Parser

> CVE-2026-78633: Denial of Service in Okta RADIUS Agent Packet Parser. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-78633
Last updated: 2026-10-16T16:21:03Z

- Published: 2026-10-13 20:08 UTC · Updated: 2026-10-16 16:21 UTC · Assigner: Okta
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.21%, 11th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: 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 vendors and products

- Okta: Okta RADIUS Agent

## Tracked companies

- [Okta](https://rewindex.com/company/okta.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-78633)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-78633)
- [https://trust.okta.com/security-advisories/denial-of-service-in-okta-radius-agent-packet-parser-cve-2026-78633](https://trust.okta.com/security-advisories/denial-of-service-in-okta-radius-agent-packet-parser-cve-2026-78633)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-78633 · Markdown: https://rewindex.com/cve/CVE-2026-78633.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-78633 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:01:00.413Z