KEV · Actively exploited
CVE-2024-39891
MEDIUM 5.3
KEV
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.)
Attack vector : Network
No privileges required
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
1.48%
above median
percentile 71.5%
CISA Known Exploited Vulnerability
- Added to KEV
- 2024-07-23
- Remediation deadline
- 2024-08-13
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Ransomware
- Unknown (not documented by CISA)
Tracked apps referencing this CVE
For each app: the affected range, the fixing version, and where the tracked app stands today.
Vulnerable CPE configurations (2)
| Vendor | Product | Platform | Versions | CPE 2.3 URI |
|---|---|---|---|---|
| twilio |
authy iOS
|
iOS | <26.1.0 | cpe:2.3:a:twilio:authy:*:*:*:*:*:iphone_os:*:* |
| twilio |
authy_authenticator Android
|
Android | <25.1.0 | cpe:2.3:a:twilio:authy_authenticator:*:*:*:*:*:android:*:* |