CVE-2021-35587
Published: November 28, 2022
Official Description
Oracle Fusion Middleware Access Manager allows an unauthenticated attacker with network access via HTTP to takeover the Access Manager product.
CISA KEV Advisory
Oracle Fusion Middleware Unspecified Vulnerability
Oracle Fusion Middleware Access Manager allows an unauthenticated attacker with network access via HTTP to takeover the Access Manager product.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in Oracle Fusion Middleware Access Manager allows an unauthenticated attacker to take complete control of the product. The very high EPSS score of 0.94258 indicates a significant likelihood of exploitation, and its inclusion in the KEV confirms it is actively exploited.
This vulnerability is actively exploited in the wild, meaning that working exploits are circulating and being used by attackers. The flaw is remotely exploitable via HTTP by unauthenticated attackers.
Apply all available security patches and updates for Oracle Fusion Middleware Access Manager. Restrict network access to the Access Manager to only necessary and trusted sources.
Technical Analysis
CVE-2021-35587 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-35587 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-35587 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1