How severe is CVE-2021-35464?

CVE-2021-35464 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35464 being actively exploited?

Yes. CVE-2021-35464 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-35464?

CVE-2021-35464 primarily affects Forgerock Access Management. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35464?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-35464 have an EU (EUVD) identifier?

Yes. CVE-2021-35464 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-22106. It is also flagged as exploited in the EUVD (since 2021-11-03).

When was CVE-2021-35464 published?

CVE-2021-35464 was published on 2021-07-22 and last updated on 2026-06-17.

CVE-2021-35464

CVE-2021-35464 is a critical-severity vulnerability in Forgerock Access Management with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03). The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
EU (EUVD) id: EUVD-2021-22106
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
Weakness: CWE-502
Affected product: Forgerock Access Management
Published: 2021-07-22
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-35464?: 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
How severe is CVE-2021-35464?: CVE-2021-35464 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35464 being actively exploited?: Yes. CVE-2021-35464 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-35464?: CVE-2021-35464 primarily affects Forgerock Access Management. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-35464 have an EU (EUVD) identifier?: Yes. CVE-2021-35464 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-22106. It is also flagged as exploited in the EUVD (since 2021-11-03).
When was CVE-2021-35464 published?: CVE-2021-35464 was published on 2021-07-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:forgerock:access_management:*:*:*:*:*:*:*:*
cpe:2.3:a:forgerock:openam:*:*:*:*:*:*:*:*

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