---
id: "CVE-2021-35464"
kind: "vulnerability"
aliases: ["CVE-2021-35464"]
title: "ForgeRock Access Management (AM): ForgeRock Access Management (AM) Core Server Remote Code Execution Vulnerability"
severity: "critical"
cvss: 10.0
epss: 0.99999
exploited: true
status: "open"
category: "vendor"
products: [{"name": "ForgeRock Access Management (AM)", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "forgerock-am", "identity", "ransomware", "self-hosted", "vendor"]
not_affected_if: ["managed-hosting"]
published_at: "2021-07-22T18:15:23+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-35464", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-35464", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-35464", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# ForgeRock Access Management (AM): ForgeRock Access Management (AM) Core Server Remote Code Execution Vulnerability

ForgeRock Access Management (AM) Core Server has an unauthenticated remote code execution flaw reachable through three /ccversion/ HTTP endpoints. An attacker who sends a crafted HTTP request runs code as the user the AM server runs under, and the CISA KEV catalog lists it as actively exploited with ransomware use noted.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:ForgeRock Access Management (AM) affected ? fixed ?

## Fix

Apply the vendor update per ForgeRock instructions; the sources do not name the fixed version.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-35464
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2021-35464
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2021-35464

## From the sources

ForgeRock AM server before 7.0 has a Java deserialization vulnerability in the jato.pageSession parameter on multiple pages. The exploitation does not require authentication, and remote code execution can be triggered by sending a single crafted /ccversion/* request to the server. The vulnerability exists due to the usage of Sun ONE Application Framework (JATO) found in versions of Java 8 or earlier

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_