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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.

PUBLISHED Reserved 2026-04-06 | Published 2026-06-04 | Updated 2026-06-04 | Assigner mitre

References

github.com/...search-Public/blob/main/GNCC-GP5-T23/README.md exploit

gncc.com

gp5.com

github.com/...search-Public/blob/main/GNCC-GP5-T23/README.md

cve.org (CVE-2026-36176)

nvd.nist.gov (CVE-2026-36176)

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