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CVE-2020-24721

MEDIUM
5.7
CVSS Score
Published: September 30, 2020 at 05:43 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
2 products affected across 2 vendorsExposure NotificationsExposure Notifications

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.3%

Description

An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol through 2020-09-29, as used in COVID-19 applications on Android and iOS. It allows a user to be put in a position where he or she can be coerced into proving or disproving an exposure notification, because of the persistent state of a private framework.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://blog.google/inside-google/company-announcements/update-exposure-notifications
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE-2020-24721.txt
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
https://seclists.org/fulldisclosure/2020/Sep/53

CVSS

5.7MEDIUM[email protected]
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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