How serious is CVE-2026-2540?

This vulnerability has a CVSS score of 8.4 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-2540?

Yes, proof-of-concept exploit code for CVE-2026-2540 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-2540?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2026-2540?

To remediate CVE-2026-2540, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-2540

High

|8.4

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can gain unauthorized access to a vehicle by exploiting a flaw in the Micca KE700 system that allows them to reuse old security codes. This requires the attacker to capture and send two specific codes in the right order, enabling them to clone the alarm key and control the vehicle's locks.

Technical Description

The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.

CVSS Vector Analysis

Attack VectorAdjacent Network

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:D/RE:M/U:X

Exploit Resources

Search for proof-of-concept code and exploit modules

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Official References

NIST NVD

Est. Bounty

$3,947($1K-$5K)

Vendor Response

Grade APatched in 3 days

Quick Information

Published

Feb 15, 2026

about 2 months ago

Last Modified

Feb 18, 2026

about 2 months ago