CVE-2024-39891
CVSS v3
5.3
MEDIUM
EPSS Score
29.6 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
In the Twilio Authy API, accessed by Authy Android before 25.1.0 and Authy iOS before 26.1.0, an unauthenticated endpoint provided access to certain phone-number data, as exploited in the wild in June 2024. Specifically, the endpoint accepted a stream of requests containing phone numbers, and responded with information about whether each phone number was registered with Authy. (Authy accounts were not compromised, however.)
CISA Known Exploited Vulnerability
- Date Added
- 2024-07-23
- Patch Due Date
- 2024-08-13
- Ransomware Use
- Unknown
Technical details
- Published
- 2024-07-02
Frequently asked questions
What is CVE-2024-39891?
In the Twilio Authy API, accessed by Authy Android before 25.1.0 and Authy iOS before 26.1.0, an unauthenticated endpoint provided access to certain phone-number data, as exploited in the wild in June 2024. Specifically, the endpoint accepted a stream of requests containing phone numbers, and responded with information about whether each phone number was registered with Authy. (Authy accounts were not compromised, however.)
Is CVE-2024-39891 actively exploited?
Yes. CVE-2024-39891 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2024-08-13.
What is the CVSS score for CVE-2024-39891?
CVE-2024-39891 has a CVSS v3 base score of 5.3 (MEDIUM severity).
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