CVE-2025-8760
Critical
Description
A vulnerability was identified in INSTAR 2K+ and 4K 3.11.1 Build 1124. This affects the function base64_decode of the component fcgi_server. The manipulation of the argument Authorization leads to buffer overflow. It is possible to initiate the attack remotely.
SeverityCritical
CVSS9.8
Exploit probability—
Product2K+
PublishedAug 13, 2025
First seenAug 13, 2025
Weakness typeCWE-120CWE-120CWE-119Memory buffer bounds error
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| INSTAR 2K+ | 3.11.1 Build 1124 | — |
| INSTAR 4K | 3.11.1 Build 1124 | — |
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