CVE-2023-26943

Physical RFID credential cloning

Published Dec 4, 2023 · Updated Aug 2, 2024

Weak encryption in RFID tags in Yale Keyless Lock v1.0 allows attackers to create a cloned tag via physical proximity to the original. The lock uses MIFARE Classic cards without anti-cloning rolling codes, allowing an attacker close to or in direct physical contact with an unprotected credential to read its data and duplicate it. The cloned credential grants the same lock access as the original holder; it does not add permissions, and Yale reports no known unauthorized property access.

CVSS severity6.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak encryption in RFID tags in Yale Keyless Lock v1.0 allows attackers to create a cloned tag via physical proximity to the original. The lock uses MIFARE Classic cards without anti-cloning rolling codes, allowing an attacker close to or in direct physical contact with an unprotected credential to read its data and duplicate it. The cloned credential grants the same lock access as the original holder; it does not add permissions, and Yale reports no known unauthorized property access.

The record

CVE
CVE-2023-26943
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-326, T1078
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
4.6YaleCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:F/RL:W

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

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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