CVE-2014-5380Public exploit

Access PIN disclosure via reversible packet encoding

Published Jan 13, 2020 · Updated Aug 6, 2024

Cleartext PIN transmission in Granding Grand MA 300/ID firmware 6.60 allows man-in-the-middle attackers to recover access PINs. The device places a reversibly encoded PIN in network or Wiegand traffic; in UDP, it occupies the final four bytes of 0x4E 0x04 packets, and fixed XORs, word swapping, and bit reversal recover it. Access to captured Ethernet or Wiegand traffic is required; disclosure is limited to the transmitted access PIN.

CVSS severity7.5
High
EPSS probability4.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext PIN transmission in Granding Grand MA 300/ID firmware 6.60 allows man-in-the-middle attackers to recover access PINs. The device places a reversibly encoded PIN in network or Wiegand traffic; in UDP, it occupies the final four bytes of 0x4E 0x04 packets, and fixed XORs, word swapping, and bit reversal recover it. Access to captured Ethernet or Wiegand traffic is required; disclosure is limited to the transmitted access PIN.

The record

CVE
CVE-2014-5380
Published
Jan 13, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T1040
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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 vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

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-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

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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