How severe is CVE-2020-5667?

CVE-2020-5667 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-5667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5667?

CVE-2020-5667 primarily affects Wantedlyinc Studyplus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5667?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5667 published?

CVE-2020-5667 was published on 2020-11-06 and last updated on 2026-06-17.

CVE-2020-5667

CVE-2020-5667 is a medium-severity vulnerability in Wantedlyinc Studyplus with a CVSS 3.x base score of 5.5. 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-798.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Wantedlyinc Studyplus
Published: 2020-11-06
Last modified: 2026-06-17

Description

Studyplus App for Android v6.3.7 and earlier and Studyplus App for iOS v8.29.0 and earlier use a hard-coded API key for an external service. By exploiting this vulnerability, API key for an external service may be obtained by analyzing data in the app.

Frequently asked questions

What is CVE-2020-5667?: Studyplus App for Android v6.3.7 and earlier and Studyplus App for iOS v8.29.0 and earlier use a hard-coded API key for an external service. By exploiting this vulnerability, API key for an external service may be obtained by analyzing data in the app.
How severe is CVE-2020-5667?: CVE-2020-5667 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-5667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5667?: CVE-2020-5667 primarily affects Wantedlyinc Studyplus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5667?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5667 published?: CVE-2020-5667 was published on 2020-11-06 and last updated on 2026-06-17.

References

https://jvn.jp/en/jp/JVN00414047/index.html

Affected products (2)

cpe:2.3:a:wantedlyinc:studyplus:*:*:*:*:*:android:*:*
cpe:2.3:a:wantedlyinc:studyplus:*:*:*:*:*:iphone_os:*:*

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