CVE-2026-66340Network attack vector

Unauthenticated account access via unrestricted password guessing

Published Aug 11, 2026 · Updated Aug 11, 2026

Improper login-attempt restriction in Mira Android App 4.5.15.4 and Mira Firmware 1.7.1.47 allows remote attackers to access accounts. The cloud authentication endpoints accept repeated failed logins without per-account limits, per-IP throttling, or account lockout. Repeated password guesses against a reachable cloud endpoint are the only reported prerequisite, and the consequence is unauthorized access to the guessed account.

CVSS severity6.9
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper login-attempt restriction in Mira Android App 4.5.15.4 and Mira Firmware 1.7.1.47 allows remote attackers to access accounts. The cloud authentication endpoints accept repeated failed logins without per-account limits, per-IP throttling, or account lockout. Repeated password guesses against a reachable cloud endpoint are the only reported prerequisite, and the consequence is unauthorized access to the guessed account.

The record

CVE
CVE-2026-66340
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Quanovate Tech Inc.
Product
Mira Hormone Monitor Firmware
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.7.1.47

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quanovate Tech Inc. · Mira Hormone Monitor Firmwareversion=1.7.1.47
Quanovate Tech Inc. · Mira Android Appversion=4.5.15.4

Published CVSS scores

5.3CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9CISA ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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