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CVE-2021-40180

24
FAUCET Score

CVE-2021-40180 describes an information disclosure vulnerability in WeChat application versions 8.0.10 for Android and iOS, where a malicious mini program can access sensitive user address book data using the wx.searchContacts function. This vulnerability carries a CVSS v3.1 score of 7.5 (HIGH), indicating a network-exploitable flaw with low attack complexity that could lead to high confidentiality impact without requiring user interaction. Despite its high severity, 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
8.0.10CPE matchmatch criteria
cpe:2.3:a:tencent:wechat:8.0.10:*:*:*:*:android:*:*
8.0.10CPE matchmatch criteria
cpe:2.3:a:tencent:wechat:8.0.10:*:*:*:*:iphone_os:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 48th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

arxiv.org / pdf/2205.15202.pdf
MitigationTechnical DescriptionThird Party Advisory
github.com / BESTICSP/Vulnerabilities-Related-to-Mini-Programs-Permissions/blob/main/WX%20applet%20contact%20permission%20vulnerability%20report.pdf
ExploitThird Party Advisory
pan.baidu.com / s/116sAQvs1CEzCeIfpI1NZvA
ExploitPermissions RequiredThird Party Advisory
pan.baidu.com / s/1RqMrZBruZZ4OHdnXUN5xDw
ExploitPermissions RequiredThird Party Advisory