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CVE-2021-37597

30
FAUCET Score

CVE-2021-37597 is a critical vulnerability affecting WP Cerber versions prior to 8.9.3, allowing for a Multi-Factor Authentication (MFA) bypass through manipulation of the wordpress_logged_in_[hash] cookie. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low complexity, enabling an unauthenticated attacker to achieve full compromise of confidentiality, integrity, and availability. While the vulnerability has a high FAUCET Risk Score of 80/100, there is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.9.3CPE matchmatch criteria
cpe:2.3:a:wpcerber:wp_cerber:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.12%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0212 is in the 69th 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

github.com / fireeye/Vulnerability-Disclosures
Third Party Advisory
github.com / fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0023/FEYE-2021-0023.md
ExploitThird Party Advisory