What is CVE-2026-21992?
Critical remote code execution vulnerability in Oracle Fusion Middleware affecting Oracle Identity Manager and Oracle Web Services Manager. The flaw enables unauthenticated remote attackers with network access via HTTP to achieve complete system compromise due to missing authentication for critical functions in the REST WebServices component.
The record classifies CVE-2026-21992 under weakness class CWE-306. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 199 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS (FIRST)
- 0.0% probability of exploitation in the next 30 days, higher than 20.6% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 5.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-03-20, last modified 2026-03-23
Is CVE-2026-21992 being exploited?
It currently carries a trending score of 10 in the Threadlinqs vulnerability feed.
Affected products and versions
- Oracle: Identity Manager, Web Services Manager
How to fix CVE-2026-21992
Vendor advisory: https://www.oracle.com/security-alerts/alert-cve-2026-21992.html. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2026-21992
1 tracked threat in the Threadlinqs corpus references CVE-2026-21992, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Seeded from threat-derived and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.