CVE-2021-4201

CVE-2021-4201 is a critical-severity vulnerability in Forgerock Access Management with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

• Severity: Critical (CVSS 3.x base score 9.6)
• CVSS v2: 7.5
• EPSS exploit prediction: 2% (81st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-287
• Affected product: Forgerock Access Management
• Published: 2022-02-14
• Last modified: 2026-06-17

Description

Missing access control in ForgeRock Access Management 7.1.0 and earlier versions on all platforms allows remote unauthenticated attackers to hijack sessions, including potentially admin-level sessions. This issue affects: ForgeRock Access Management 7.1 versions prior to 7.1.1; 6.5 versions prior to 6.5.4; all previous versions.

Frequently asked questions

What is CVE-2021-4201?

Missing access control in ForgeRock Access Management 7.1.0 and earlier versions on all platforms allows remote unauthenticated attackers to hijack sessions, including potentially admin-level sessions. This issue affects: ForgeRock Access Management 7.1 versions prior to 7.1.1; 6.5 versions prior to 6.5.4; all previous versions.

How severe is CVE-2021-4201?

CVE-2021-4201 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-4201 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4201?

CVE-2021-4201 primarily affects Forgerock Access Management. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-4201?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-4201 published?

CVE-2021-4201 was published on 2022-02-14 and last updated on 2026-06-17.

References

• https://backstage.forgerock.com/knowledge/kb/article/a50037155#x7ZPA0

Affected products (20)

• cpe:2.3:a:forgerock:access_management:5.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.0.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:6.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:forgerock:access_management:7.1.0:*:*:*:*:*:*:*

More vulnerabilities in Forgerock Access Management

• CVE-2022-3748 — Critical (CVSS 9.8): Improper Authorization vulnerability in ForgeRock Inc. Access Management allows Authentication Bypass. This issue…
• CVE-2021-37154 — Critical (CVSS 9.8): In ForgeRock Access Management (AM) before 7.0.2, the SAML2 implementation allows XML injection, potentially enabling a…
• CVE-2021-37153 — Critical (CVSS 9.8): ForgeRock Access Management (AM) before 7.0.2, when configured with Active Directory as the Identity Store, has an…
• CVE-2021-35464 — Critical (CVSS 9.8): ForgeRock AM server before 7.0 has a Java deserialization vulnerability in the jato.pageSession parameter on multiple…
• CVE-2023-0582 — High (CVSS 8.1): Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in ForgeRock Access…
• CVE-2022-24670 — High (CVSS 7.1): An attacker can use the unrestricted LDAP queries to determine configuration entries

All CVEs affecting Forgerock Access Management →

Other CWE-287 (Improper Authentication) vulnerabilities

• CVE-2026-97785 — Critical (CVSS 10.0): Improper authentication in AAD App Proxy allows an unauthorized attacker to elevate privileges over a network.
• CVE-2026-108907 — Critical (CVSS 10.0): A vulnerability was determined in Netcore NR268 1.7.121109. Affected is the function user_ok of the component CGI…
• CVE-2026-101077 — Critical (CVSS 10.0): A flaw has been found in Netcore NR289-GE 1.4.5102. This impacts the function process_request of the component boa_temp…
• CVE-2026-100886 — Critical (CVSS 10.0): A vulnerability was identified in Seetong T8108, T8108P, T8116 and T8232 4.6.1.4-build202604241011. The affected…
• CVE-2026-77244 — Critical (CVSS 10.0): MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0,…
• CVE-2026-94493 — Critical (CVSS 10.0): A vulnerability was detected in Gigatech PDV5701 1.0.31_240305_112640. This issue affects some unknown processing of…

Browse all CWE-287 (Improper Authentication) vulnerabilities →