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CVE-2021-43136

50
FAUCET Score

CVE-2021-43136 is a critical authentication bypass vulnerability affecting FormaLMS versions up to 2.4.4, allowing unauthorized access to the platform. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, a public exploit (EDB-50513) exists, indicating readily available attack tools. Despite this, there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.4CPE matchmatch criteria
cpe:2.3:a:formalms:formalms:*:*:*:*:*:*:*:*

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
15.72%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-50513 · Nov 11, 2021
This CVE's current EPSS score of 0.1573 is in the 93rd percentile among its peer group of 36,835 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

packetstormsecurity.com / files/164930/FormaLMS-2.4.4-Authentication-Bypass.html
ExploitThird Party AdvisoryVDB Entry
blog.hacktivesecurity.com
Third Party Advisory
blog.hacktivesecurity.com / index.php/2021/10/05/cve-2021-43136-formalms-the-evil-default-value-that-leads-to-authentication-bypass
ExploitThird Party Advisory
formalms.org
Vendor Advisory