CVE-2025-53690
Sitecore — Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
Sitecore · in CISA KEV since 2025-09-04
KEV since 2025 · listed over a yearCISA KEVActively Exploited
76
EVRS 76 of 100 Urgent
Patch This Cycle
Rank 678 of 2,960 tracked
Why it scores 76
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.606.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
No fixed version identified yetEvidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.0 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.606 (99.15th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-09-25 · KEV since 2025 · listed over a year | CISA KEV |