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TI-2020-15178 Aliases CVE-2020-24721GHSA-9pjj-6grx-8qjx

An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol…

Priority LOW 26Published · Updated

Key facts

Attack vector
Physical
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00318 24th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apple:exposure_notifications:*:*:*:*:*:iphone_os:*:*up to 1.5VulnerableApple
cpe:2.3:a:google:exposure_notifications:*:*:*:*:*:android:*:*up to 1.5VulnerableGoogle
  • cpe:2.3:a:apple:exposure_notifications:*:*:*:*:*:iphone_os:*:* Versions up to 1.5 Vulnerable ·Apple
  • cpe:2.3:a:google:exposure_notifications:*:*:*:*:*:android:*:* Versions up to 1.5 Vulnerable ·Google

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-24721
  2. 2026-10-03 Alias added: GHSA-9pjj-6grx-8qjx

References

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences