What’s Vulnerable › Vulnerabilities

CVE-2025-8761: INSTAR 2K+/4K Backend IPC Server denial of service

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-13 · updated 2026-06-17
• Weakness: CWE-404

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 products

• INSTAR 2K+: 3.11.1 Build 1124
• INSTAR 4K: 3.11.1 Build 1124

References

• https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf
• https://vuldb.com/?ctiid.319864
• https://vuldb.com/?id.319864

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