IBM Sterling Secure Proxy 6.0.3.0, 6.0.2.0, and 3.4.3.2 and IBM Sterling External Authentication Server are vulnerable a buffer overflow, due to the Jetty based GUI in the Secure Zone not properly validating the sizes of the form content and/or HTTP headers submitted. A local attacker positioned inside the Secure Zone could submit a specially crafted HTTP request to disrupt service. IBM X-Force ID: 219133.
Conclusion & alert: CVE-2022-22333 is rated Moderate Risk (50.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.65%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-01-04 | 0.65% | 0.65% | -0.00% |
| 2 | 2025-11-21 | 0.17% | 0.65% | +0.48% |
| 3 | 2025-11-18 | — | 0.17% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.5 | 3.0 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 3.3 | 2.0 | LOW |
|
6.5 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ibm | sterling_external_authentication_server | 3.4.3.2 | cpe:2.3:a:ibm:sterling_external_authentication_server:3.4.3.2:*:*:*:*:*:*:* |
| ibm | sterling_external_authentication_server | 6.0.2.0 | cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.2.0:*:*:*:*:*:*:* |
| ibm | sterling_external_authentication_server | 6.0.3.0 | cpe:2.3:a:ibm:sterling_external_authentication_server:6.0.3.0:*:*:*:*:*:*:* |
| ibm | sterling_secure_proxy | 3.4.3.2 | cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.2:*:*:*:*:*:*:* |
| ibm | sterling_secure_proxy | 6.0.2 | cpe:2.3:a:ibm:sterling_secure_proxy:6.0.2:*:*:*:*:*:*:* |
| ibm | sterling_secure_proxy | 6.0.3.0 | cpe:2.3:a:ibm:sterling_secure_proxy:6.0.3.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://exchange.xforce.ibmcloud.com/vulnerabilities/219133 | VDB Entry Vendor Advisory |
| https://www.ibm.com/support/pages/node/6558796 | Patch Vendor Advisory |