Vulnerability · Published Jun 4, 2026 · Assigned by mitre
CVE-2026-36176
High 7.1
In plain English
A high-severity security flaw in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)<0.1%top 99.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-312 · Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N