Known exploited vulnerability · CISA KEV

CVE-2021-35464: ForgeRock Access Management (AM) Core Server Remote Code Execution Vulnerability

ForgeRock Access Management (AM) Core Server allows an attacker who sends a specially crafted HTTP request to one of three endpoints (/ccversion/Version, /ccversion/Masthead, or /ccversion/ButtonFrame) to execute code in the context of the current user (unless ForgeRock AM is running as root user, which the vendor does not recommend).

CVE-2021-35464

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it right now. It is known to be used in ransomware campaigns.

CISA KEV: Listed; Added 2021-11-03 · federal fix-by 2021-11-17
EPSS (30 days): over 99.9%; Higher than 99.9% of CVEs · 2026-11-01
CVSS v3.1: 9.8 Critical; CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What CISA says

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

Apply updates per vendor instructions.

NVD description · published 2021-07-22

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

Full record on NVD

Got a whole scan? Scan Hub runs this check on every finding in your Nessus, Qualys, Rapid7 or OpenVAS export and ranks the report by it.

Try it free

How to check if you are exposed to CVE-2021-35464

Find every ForgeRock Access Management (AM) system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2021-35464.

US federal agencies had to fix this by 2021-11-17. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2021-35464. Check the vendor advisory for the exact fixed builds before you sign anything off.

Product	Vulnerable versions
ForgeRock Access Management	before 6.5.4
ForgeRock Openam	from 9.0.0 before 14.6.3

Timeline

2021-07-22 · Published in the National Vulnerability Database
2021-11-03 · Added to CISA's Known Exploited Vulnerabilities catalog, 104 days after it was published
2021-11-17 · Fix-by date for US federal agencies, passed 1,810 days ago

Weakness type

CWE-502

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.