How severe is CVE-2021-3305?

CVE-2021-3305 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3305 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3305?

CVE-2021-3305 affects Feishu. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3305?

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-2021-3305 published?

CVE-2021-3305 was published on 2022-10-18 and last updated on 2026-07-05.

CVE-2021-3305

CVE-2021-3305 is a high-severity vulnerability in Feishu with a CVSS 3.x base score of 7.8. 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-426.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Feishu
Published: 2022-10-18
Last modified: 2026-07-05

Description

Beijing Feishu Technology Co., Ltd Feishu v3.40.3 was discovered to contain an untrusted search path vulnerability.

Frequently asked questions

What is CVE-2021-3305?: Beijing Feishu Technology Co., Ltd Feishu v3.40.3 was discovered to contain an untrusted search path vulnerability.
How severe is CVE-2021-3305?: CVE-2021-3305 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3305 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3305?: CVE-2021-3305 affects Feishu. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3305?: 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-2021-3305 published?: CVE-2021-3305 was published on 2022-10-18 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:feishu:feishu:*:*:*:*:*:*:*:*

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