CVE-2026-2541Public exploit

Unauthorized vehicle access via brute-forced rolling code

Published Feb 15, 2026 · Updated Feb 15, 2026

Insufficient entropy in Micca KE700 allows physically proximate attackers to unlock a vehicle by brute-forcing its rolling code. Its code combines a constant 9-bit key-fob ID with an incrementing 16-bit counter, leaving only a 16-bit random value to guess across 65,536 candidates. Exploitation requires sniffing one current RF transmission to predict the next counter; successful nearby transmission of a valid candidate unlocks the vehicle.

CVSS severity6.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient entropy in Micca KE700 allows physically proximate attackers to unlock a vehicle by brute-forcing its rolling code. Its code combines a constant 9-bit key-fob ID with an incrementing 16-bit counter, leaving only a 16-bit random value to guess across 65,536 candidates. Exploitation requires sniffing one current RF transmission to predict the next counter; successful nearby transmission of a valid candidate unlocks the vehicle.

The record

CVE
CVE-2026-2541
Published
Feb 15, 2026
Updated
Feb 15, 2026
Vendor
Micca Auto Electronics Co., Ltd.
Product
KE700
Classifications
CWE-331, CAPEC-112
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

6.4Automotive Security Research Group (ASRG)CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-331Insufficient Entropy
CAPEC-112Brute Force

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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