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ExploitedIn CISA KEV

CVE-2021-35587

Exploitation confirmed. First attested on 2022-11-28 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2022-01-19
  • WeaknessCWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2022-01-1912:15CVE publishedNVD
  2. 2022-11-28Added to the CISA KEV catalogCISA KEV
  3. 2022-11-28Listed as exploited by GCVEGCVE
  4. 2022-11-28Exploitation first reportedCISA KEV
  5. 2024-09-2519:01SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-35587?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-35587?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Oracle access manager
BranchAffectedFixed in
11.1= 11.1.2.3.0no fix published
12.2= 12.2.1.3.0no fix published
12.2= 12.2.1.4.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As oracle, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Oracle Corporation Access Manager
    Affected
    • = 11.1.2.3.0no fix stated
    • = 12.2.1.3.0no fix stated
    • = 12.2.1.4.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-01-19

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-12-19

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedZZ-SOCMAP/CVE-2021-35587Jwa7470/2025-Oracle-SSO-LDAP-Attack-Post-Incident-Written-Report
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/http/oracle_access_manager_rce_cve_2021_35587rank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-11-28
Patch Due Date
2022-12-19
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-01-19
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-x3jv-936g-xqj4

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).

Is CVE-2021-35587 actively exploited?

Yes. CVE-2021-35587 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-12-19.

What is the CVSS score for CVE-2021-35587?

CVE-2021-35587 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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