How severe is CVE-2021-40180?

CVE-2021-40180 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40180?

CVE-2021-40180 primarily affects Tencent Wechat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40180?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40180 published?

CVE-2021-40180 was published on 2022-07-26 and last updated on 2026-06-17.

CVE-2021-40180

CVE-2021-40180 is a high-severity vulnerability in Tencent Wechat with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Tencent Wechat
Published: 2022-07-26
Last modified: 2026-06-17

Description

In the WeChat application 8.0.10 for Android and iOS, a mini program can obtain sensitive information from a user's address book via wx.searchContacts.

Frequently asked questions

What is CVE-2021-40180?: In the WeChat application 8.0.10 for Android and iOS, a mini program can obtain sensitive information from a user's address book via wx.searchContacts.
How severe is CVE-2021-40180?: CVE-2021-40180 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40180 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40180?: CVE-2021-40180 primarily affects Tencent Wechat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40180?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40180 published?: CVE-2021-40180 was published on 2022-07-26 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:tencent:wechat:8.0.10:*:*:*:*:android:*:*
cpe:2.3:a:tencent:wechat:8.0.10:*:*:*:*:iphone_os:*:*

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