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CVE-2020-13702

26
FAUCET Score

CVE-2020-13702 describes a critical privacy bypass vulnerability in the Apple/Google Exposure Notification API beta's Rolling Proximity Identifier, affecting the_rolling_proximity_identifier_project. An attacker can leverage a secondary temporary UID to circumvent Bluetooth Smart Privacy, enabling seamless tracking of individual device movement via Bluetooth LE discovery. With a CVSS score of 10.0 (Critical), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality and integrity. While no active exploits, public exploit code, or significant community discussion have been observed, its high FAUCET Risk Score of 81/100 indicates a significant potential risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020-05-29CPE matchmatch criteria
cpe:2.3:a:the_rolling_proximity_identifier_project:the_rolling_proximity_identifier:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.17%
Probability of exploitation in next 30 days
EPSS Percentile
80.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0217 is in the 70th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blog.google / documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
Third Party Advisory
github.com / google/exposure-notifications-internals/commit/8f751a666697
PatchThird Party Advisory
github.com / google/exposure-notifications-internals/commit/8f751a666697c3cae0a56ae3464c2c6cbe31b69e
PatchThird Party Advisory
github.com / normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200611.pdf
ExploitTechnical DescriptionThird Party Advisory
github.com / normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616-2.pdf
ExploitTechnical DescriptionThird Party Advisory
github.com / normanluhrmann/infosec/raw/master/exposure-notification-vulnerability-20200616.pdf
ExploitTechnical DescriptionThird Party Advisory