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CVE-2020-23653

30
FAUCET Score

CVE-2020-23653 is a critical insecure unserialize vulnerability affecting ThinkAdmin versions 4.x through 6.x, specifically in the Update.php and Push.php files. This flaw allows for unauthenticated remote code execution with a CVSS score of 9.8, indicating a severe impact on confidentiality, integrity, and availability. Despite its critical severity and high EPSS score, there is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, <= 6.0CPE matchmatch criteria
cpe:2.3:a:thinkadmin:thinkadmin:*:*:*:*:*:*:*:*

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
4.10%
Probability of exploitation in next 30 days
EPSS Percentile
89.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0410 is in the 83rd 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

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: zoujingli/thinkadminFixed in: 6.1.0

Vendor Advisories (1)

composerGHSA-4vp2-mj4m-69m4critical

ThinkAdmin insecure unserialize vulnerability

May 24, 2022

References

github.com / zoujingli/ThinkAdmin/issues/238
ExploitThird Party Advisory