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CVE-2021-20136

34
FAUCET Score

CVE-2021-20136 is a critical improper access control vulnerability affecting ManageEngine Log360 builds prior to 5235. An unauthenticated remote attacker can exploit this by sending a crafted message to overwrite the backend database configuration, forcing a restart and potentially achieving remote code execution. With a CVSS score of 9.8 (Critical), this vulnerability has a low attack complexity and allows for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, its high FAUCET Risk Score of 96/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.2CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_log360:*:*:*:*:*:*:*:*
5.3CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_log360:5.3:build5232:*:*:*:*:*:*
5.3CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_log360:5.3:build5233:*:*:*:*:*:*
5.3CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_log360:5.3:build5234:*:*:*:*:*:*

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
10.45%
Probability of exploitation in next 30 days
EPSS Percentile
95.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1045 is in the 91st percentile among its peer group of 36,897 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

Vendor Patches (5)

asteriskvendor investigatingvia llm_extracted
ciscovendor investigatingvia llm_extracted
miniovendor investigatingvia llm_extracted
opensshvendor investigatingvia llm_extracted
railsvendor investigatingvia llm_extracted

Vendor Advisories (5)

opensshllm-openssh-b5217fde6b9ccdbdCRITICAL

ManageEngine Log360 Database Configuration Overwrite Unauthenticated RCE

Oct 29, 2021
railsllm-rails-0d385b6dba41234dCRITICAL

ManageEngine Log360 Database Configuration Overwrite Unauthenticated RCE

Oct 29, 2021
miniollm-minio-5fed0aba08dc0d08CRITICAL

ManageEngine Log360 Database Configuration Overwrite Unauthenticated RCE

Oct 29, 2021
ciscollm-cisco-dfe68a54ab1c10d1CRITICAL

ManageEngine Log360 Database Configuration Overwrite Unauthenticated RCE

Oct 29, 2021
asteriskllm-asterisk-be02af0b2a2e30c1CRITICAL

ManageEngine Log360 Database Configuration Overwrite Unauthenticated RCE

Oct 29, 2021

References

tenable.com / security/research/tra-2021-48
ExploitThird Party Advisory