CVE-2026-78633— Denial of Service in Okta RADIUS Agent Packet Parser
Quick assessment
Affected
Okta Okta RADIUS Agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Okta RADIUS 代理在解析 Vendor-Specific 属性时，未对子属性的长度进行验证。当子属性长度为 0 时，会导致解析器进入无限循环，从而引发工作线程耗尽，最终造成新的 RADIUS 认证请求无法处理（拒绝服务）。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-78633
Vulnerability Information
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Vulnerability Title
Denial of Service in Okta RADIUS Agent Packet Parser
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Okta | Okta RADIUS Agent | 2.17.5 ~ 2.28.0 | - |
|
II. Public POCs for CVE-2026-78633
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-78633 (1)
Same Patch Batch · Okta · 2026-10-13 · 3 CVEs total
| CVE-2026-78628 | 6.0 MEDIUM | Improper Input Validation in the Okta Credential Provider for Windows |
| CVE-2026-78632 | 5.3 MEDIUM | Insecure Default File Permissions in Okta RADIUS Agent Windows Installer |
IV. Related Vulnerabilities
Same vendor: Okta
-
CVE-2026-78632
Insecure Default File Permissions in Okta RADIUS Agent Windo -
CVE-2026-78628
Improper Input Validation in the Okta Credential Provider fo -
CVE-2026-78622
Improper Link Resolution in Okta Verify for Windows Uninstal -
CVE-2026-78631
Improper Restriction of Sensitive Information in Okta Hyperd -
CVE-2026-78630
Improper Input Neutralization in Okta Access Gateway SNMP Co
Same weakness: CWE-835
-
CVE-2026-109941
FreeRDP 2.3.0 before 3.32.0 Infinite Loop via RD Gateway Chu -
CVE-2026-109832
Gnome-remote-desktop: busy-wait dos in vnc tls i/o handlers -
CVE-2026-107696
FFmpeg through 9.0.2 Infinite Loop via RTSP Redirect Handlin -
CVE-2026-107695
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Refer -
CVE-2026-107677
FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty Se
V. Comments for CVE-2026-78633
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