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GHSA-822C-H5GX-7PW7

Vulnerability from github – Published: 2026-02-15 12:30 – Updated: 2026-02-15 12:30

Details

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.

Severity

8.4 (High)


                  
                    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/V:D/RE:M

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  "affected": [],
  "aliases": [
    "CVE-2026-2540"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-15T11:15:55Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-822c-h5gx-7pw7",
  "modified": "2026-02-15T12:30:25Z",
  "published": "2026-02-15T12:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2540"
    },
    {
      "type": "WEB",
      "url": "https://asrg.io/security-advisories/cve-2026-2540"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-2540 (GCVE-0-2026-2540)

Vulnerability from cvelistv5 – Published: 2026-02-15 11:03 – Updated: 2026-02-17 17:06

Title

Micca KE700 Acceptance of previously used rolling codes

Summary

Severity

8.4 (High)


                        
                          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/V:D/RE:M

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-17 16:42 UTC

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel
CWE-294 - Authentication Bypass by Capture-replay

Assigner

ASRG icscert root Scorecard

References

1 reference

URL	Tags
https://asrg.io/security-advisories/cve-2026-2540/	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Micca Auto Electronics Co., Ltd.	Car Alarm System KE700	Affected: KE700 Unknown: KE700+

Credits

Danilo Erazo

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JSON

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                  },
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                "timestamp": "2026-02-17T16:42:17.825107Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

GHSA-822C-H5GX-7PW7

CVE-2026-2540 (GCVE-0-2026-2540)

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