CVE-2026-2539Public exploit

Adjacent authentication-data disclosure via cleartext RF frames

Published Feb 15, 2026 · Updated Feb 15, 2026

Cleartext transmission in the Micca KE700 RF module allows attackers with radio reception equipment to read key-fob authentication data. The 41-bit RF frame is sent without encryption, exposing its 16-bit rolling-code counter and 9-bit key-fob identifier after signal decoding. Passive reception of one nearby transmission requires no privileges or user interaction and supplies the current counter needed for follow-on brute-force attacks.

CVSS severity5.7
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in the Micca KE700 RF module allows attackers with radio reception equipment to read key-fob authentication data. The 41-bit RF frame is sent without encryption, exposing its 16-bit rolling-code counter and 9-bit key-fob identifier after signal decoding. Passive reception of one nearby transmission requires no privileges or user interaction and supplies the current counter needed for follow-on brute-force attacks.

The record

CVE
CVE-2026-2539
Published
Feb 15, 2026
Updated
Feb 15, 2026
Vendor
Micca Auto Electronics Co., Ltd.
Product
KE700
Classifications
CWE-319, CAPEC-37, T1040
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 15, 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?

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  1. Affected versionversion=KE700

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Micca Auto Electronics Co., Ltd. · KE700version=KE700

Published CVSS scores

5.7ASRGCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

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

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
CAPEC-37Retrieve Embedded Sensitive Data
T1040Network Sniffing

Public exploit references

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Technologies

Your stack

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Your stack

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