IBM PowerHA SystemMirror for i 7.4 and 7.5 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic.
Conclusion & alert: CVE-2024-55897 is rated Low Risk (24.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 2026-02-12 | 0.04% | 0.07% | +0.03% |
| 2 | 2026-02-11 | 0.07% | 0.04% | -0.04% |
| 3 | 2026-02-07 | — | 0.07% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ibm | powerha_system_mirror | — | cpe:2.3:a:ibm:powerha_system_mirror:-:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7180036 | Vendor Advisory |