What is CVE-2021-35587?

CVE-2021-35587 is a critical-severity vulnerability in Oracle Access Manager, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-01-19.

How severe is CVE-2021-35587?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-35587 known to be exploited?

Yes. CVE-2021-35587 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-11-28), indicating it is being actively exploited. 34 public proof-of-concept repositories are indexed.

Auth bypass in Oracle Access Manager

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).

Vulnerability class: Broken Authentication

Published 2022-01-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.963 (99.9th percentile), scored 2026-10-09.

Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.963 · newest: 0.963 · change: 0.000

Affected products

Oracle Access Manager — versions 11.1.2.3.0, 12.2.1.3.0, 12.2.1.4.0
Oracle Corporation Access Manager — versions 11.1.2.3.0, 12.2.1.3.0, 12.2.1.4.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-11-28. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-12-19.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.oracle.com/security-alerts/cpujan2022.html (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-35587?: CVE-2021-35587 is a critical-severity vulnerability in Oracle Access Manager, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-01-19.
How severe is CVE-2021-35587?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-35587 known to be exploited?: Yes. CVE-2021-35587 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-11-28), indicating it is being actively exploited. 34 public proof-of-concept repositories are indexed.