CVE-2025-8761 json
INSTAR 2K+/4K Backend IPC Server denial of service
published last yr. modified 4mo ago also EUVD-2025-24543
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.1%
- EPSS 9.1% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
9.09% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- modzero.com https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS: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 |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:W/RC:R |
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:W/RC:R |
| CNA | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:W/RC:UR |
| CNA | 4.0 | 7.7 | CVSS: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:X |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Affected products
- INSTAR 2K+
- INSTAR 4K
Classification
- Weakness
-
- CWE-404 Improper Resource Shutdown or Release
References
-
modzero.com
/static/MZ-25-03_modzero_INSTAR.pdf
exploit
-
vuldb.com
/?id.319864
vdb-entry
-
vuldb.com
/?ctiid.319864
signature, permissions-required
Sources
- CVE List CVE-2025-8761
- NVD CVE-2025-8761
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