CVE-2026-36176: n/a
GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.
AI Analysis
Technical Summary
The vulnerability in GNCC GP5 v7.1.76 involves the insecure storage of pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext on the device's serial console output. This allows an attacker with physical access to the serial UART interface to monitor and extract these active tokens. These tokens can then be used to perform unauthorized operations against the Backblaze B2 service. The issue is a cleartext storage of sensitive information (CWE-312) and affects exactly version 7.1.76. There is no indication of known exploits in the wild or an available patch at this time.
Potential Impact
An attacker with physical proximity and access to the serial UART interface can extract active pre-signed upload URLs, enabling unauthorized use of Backblaze B2 upload capabilities. This compromises confidentiality and integrity of the affected service operations. There is no impact on availability reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict physical access to devices and secure the serial UART interface to prevent unauthorized monitoring of console output.
CVE-2026-36176: n/a
Description
GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.
CVSS v3.1
Score 7.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in GNCC GP5 v7.1.76 involves the insecure storage of pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext on the device's serial console output. This allows an attacker with physical access to the serial UART interface to monitor and extract these active tokens. These tokens can then be used to perform unauthorized operations against the Backblaze B2 service. The issue is a cleartext storage of sensitive information (CWE-312) and affects exactly version 7.1.76. There is no indication of known exploits in the wild or an available patch at this time.
Potential Impact
An attacker with physical proximity and access to the serial UART interface can extract active pre-signed upload URLs, enabling unauthorized use of Backblaze B2 upload capabilities. This compromises confidentiality and integrity of the affected service operations. There is no impact on availability reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict physical access to devices and secure the serial UART interface to prevent unauthorized monitoring of console output.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a218ccae29bf47b50ad1a9d
Added to database: 06/04/2026, 14:33:46 UTC
Last enriched: 07/05/2026, 21:10:58 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 71
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