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CVE-2021-4201

31
FAUCET Score

CVE-2021-4201 is a critical missing access control vulnerability in ForgeRock Access Management versions 7.1.0 and earlier, allowing remote unauthenticated attackers to hijack user and potentially administrative sessions. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no public exploit intelligence, and it has not been added to CISA's KEV catalog. Community discussion and media coverage for this CVE are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
5.5.2CPE matchmatch criteria
cpe:2.3:a:forgerock:access_management:5.5.2:*:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:forgerock:access_management:6.0.0:*:*:*:*:*:*:*
6.0.0.1CPE matchmatch criteria
cpe:2.3:a:forgerock:access_management:6.0.0.1:*:*:*:*:*:*:*
6.0.0.2CPE matchmatch criteria
cpe:2.3:a:forgerock:access_management:6.0.0.2:*:*:*:*:*:*:*
6.0.0.3CPE matchmatch criteria
cpe:2.3:a:forgerock:access_management:6.0.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.98%
Probability of exploitation in next 30 days
EPSS Percentile
78.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0198 is in the 67th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

backstage.forgerock.com / knowledge/kb/article/a50037155
PatchVendor Advisory