CVE-2025-8760 is a critical buffer overflow vulnerability affecting INSTAR 2K+ and 4K cameras running firmware version 3.11.1 Build 1124. The flaw resides in the fcgi_server component's base64_decode function, triggered by manipulating the Authorization header. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating it can be exploited remotely with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion, with a recent mention on Mastodon highlighting the remote execution risk and the absence of a patch.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| INSTAR | 2K+ | 3.11.1 Build 1124CNA affected | |
| INSTAR | 4K | 3.11.1 Build 1124CNA affected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.