CVE-2021-35587

CVE-2021-35587 is a critical-severity vulnerability in Oracle Access Manager with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-11-28). The underlying weakness is classified as CWE-306.

Key facts

Description

Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: OpenSSO Agent). Supported versions that are affected are 11.1.2.3.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2021-35587?
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: OpenSSO Agent). Supported versions that are affected are 11.1.2.3.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How severe is CVE-2021-35587?
CVE-2021-35587 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35587 being actively exploited?
Yes. CVE-2021-35587 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-11-28, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-35587?
CVE-2021-35587 primarily affects Oracle Access Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35587?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-35587 have an EU (EUVD) identifier?
Yes. CVE-2021-35587 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-22223. It is also flagged as exploited in the EUVD (since 2022-11-28).
When was CVE-2021-35587 published?
CVE-2021-35587 was published on 2022-01-19 and last updated on 2026-06-17.

References

Affected products (3)

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