6.5

CVE-2021-22565: google llc google exposure-notifications-verification-server Improper Access Control

CVSS: 6.5v3.1MediumModified
AliasesGHSA-wx8q-rgfr-cf6vGO-2022-0270
Published 09-12-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-22565 is a medium (CVSS 6.5) Improper Access Control vulnerability in google llc google exposure-notifications-verification-server. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-12-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

An attacker could prematurely expire a verification code, making it unusable by the patient, making the patient unable to upload their TEKs to generate exposure notifications. We recommend upgrading the Exposure Notification server to V1.1.2 or greater.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.01 pp

From 0.43% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/google1 product
  • exposure-notifications-verification-server< 1.1.2
Google1 product
Google llc1 product

3 vendors · 3 products

References

4 links