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CVE-2021-4201
Pre-authentication session hijacking
Critical9.6EPSS 2.0%
- Published
- Updated
- Reserved
- Assigned by
- ForgeRock
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ForgeRockCNA (assigner) | 3.1 | Critical9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.6.
Weakness
Affected products
- affected 7.1 – < 7.1.1
- affected 6.5 – < 6.5.4
What to do
Solution: This issue is fixed in AM 6.5.4, 7.1.1, and all later versions.
Workaround: Block access to the following endpoints: /authservice /sessionservice /profileservice /policyservice /namingservice /loggingservice
References (1)
- https://backstage.forgerock.com/knowledge/kb/article/a50037155#x7ZPA0 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2021-4201)Record last updated .