IBM Cognos Controller 11.0.0 through 11.0.1 FP3 and IBM Controller 11.1.0 is vulnerable to unrestricted deserialization. This vulnerability allows users to execute arbitrary code, escalate privileges, or cause denial of service attacks by exploiting the unrestricted deserialization of types in the application.
Conclusion & alert: CVE-2024-28777 is rated Moderate Risk (56.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.39%). 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 | 2026-04-05 | 0.17% | 0.39% | +0.22% |
| 2 | 2026-03-30 | 1.20% | 0.17% | -1.03% |
| 3 | 2025-12-16 | — | 1.20% | — |
Full EPSS history (16 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ibm | cognos_controller | >= 11.0.0, < 11.0.1.4 | cpe:2.3:a:ibm:cognos_controller:*:*:*:*:*:*:*:* |
| ibm | controller | 11.1.0 | cpe:2.3:a:ibm:controller:11.1.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7183597 | Vendor Advisory |