CVEs / CVE-2025-8761
CVE-2025-8761: INSTAR 2K+ vulnerability
- high 7.7 CVSS 4.0 (from the CNA)
- EPSS 10.9% chance of exploitation in the next 30 days, higher than 95% of CVEs (14 Nov 2026)
- Last changed at its sources
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Description
A vulnerability has been found in INSTAR 2K+ and 4K 3.11.1 Build 1124. This vulnerability affects unknown code of the component Backend IPC Server. The manipulation leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| INSTAR 2K+ | 3.11.1 Build 1124 | — |
| INSTAR 4K | 3.11.1 Build 1124 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 13 Nov 2026.
Severity
| CVSS 4.0 | 7.7 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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:XScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-404 |
References
- CVE-2025-8761 on NVD
- https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf
- https://vuldb.com/?ctiid.319864
- https://vuldb.com/?id.319864
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.