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VulnerabilityCVE-2026-66340Published 2026-08-11

CVE-2026-66340 — Mira Firmware

medium

As of 2026-08-12, CVE-2026-66340 is a MEDIUM-severity vulnerability in Mira Firmware, CVSS v3.1 5.3, EPSS 0.2% (14.7th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-66340 as of 2026-08-12; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
5.3/10Medium
EPSS
0.2%Higher than 14.7% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
3.2/10Threadlinqs triage score
Published
Updated 2026-08-12
CVSS v3.1 5.3 (MEDIUM) · CVSS v4.0 6.9 · EPSS 0.2% (higher than 14.7% of all scored CVEs) · Priority 3.2/10 · Published 2026-08-11

Last updated:

What is CVE-2026-66340?

The Mira cloud authentication endpoints do not enforce per-account rate limiting, per-IP throttling, or account lockout after repeated failed login attempts. An attacker can use brute-force methods to obtain gain access to user accounts.

The record classifies CVE-2026-66340 under weakness class CWE-307. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 55 days ago.

Severity and exploitation probability

CVSS v3.1 base score
5.3 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0 base score
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS (FIRST)
0.2% probability of exploitation in the next 30 days, higher than 14.7% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
3.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-08-11, last modified 2026-08-12

Is CVE-2026-66340 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-66340

No vendor patch reference has been recorded for CVE-2026-66340 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-66340

No threat campaign in the Threadlinqs corpus currently references CVE-2026-66340, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Other references