CVE-2026-36178Public exploit

Credential disclosure via incomplete factory-reset partition wipe

Published Jun 4, 2026 · Updated Jun 4, 2026

Information disclosure in GNCC GP5 7.1.76 allows physically proximate attackers to recover private keys and Wi-Fi credentials after reset. The factory-reset routine leaves the mtd4 JFFS2 configuration partition intact, retaining the RSA private key and prior Wi-Fi credentials. Physical access is required, and the published proof of concept first obtains root through a separate boot flaw before dumping the retained material for device impersonation.

CVSS severity4.6
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GNCC GP5 7.1.76 allows physically proximate attackers to recover private keys and Wi-Fi credentials after reset. The factory-reset routine leaves the mtd4 JFFS2 configuration partition intact, retaining the RSA private key and prior Wi-Fi credentials. Physical access is required, and the published proof of concept first obtains root through a separate boot flaw before dumping the retained material for device impersonation.

The record

CVE
CVE-2026-36178
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-212, T1552.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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?

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

4.6CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/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 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 exploitPublished

Weakness, pattern, technique

CWE-212Improper Removal of Sensitive Information Before Storage or Transfer
T1552.004Unsecured Credentials: Private Keys

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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