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CVE-2025-8761

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8bd48f1404260c1a8102a09bcda93afe58ee31f5327049b368db2efb90d0907b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"modules":["Backend IPC Server"],"product":"4K","vendor":"INSTAR","versions":[{"status":"affected","version":"3.11.1 Build 1124"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/affected/1

{"modules":["Backend IPC Server"],"product":"2K+","vendor":"INSTAR","versions":[{"status":"affected","version":"3.11.1 Build 1124"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/affected/0
cvss · 4 assertions

{"metric":{"baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"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","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"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","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":7.8,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:W/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/3/cvssV2_0

Affected products and versions

2 source assertions
{"modules":["Backend IPC Server"],"product":"4K","vendor":"INSTAR","versions":[{"status":"affected","version":"3.11.1 Build 1124"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/affected/1
{"modules":["Backend IPC Server"],"product":"2K+","vendor":"INSTAR","versions":[{"status":"affected","version":"3.11.1 Build 1124"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"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","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"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","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":7.8,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:W/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

1 source assertion
{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/references/2
{"name":"VDB-319864 | CTI Indicators (IOB, IOC, TTP)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.319864"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/references/1
{"name":"VDB-319864 | INSTAR 2K+/4K Backend IPC Server denial of service","tags":["vdb-entry"],"url":"https://vuldb.com/?id.319864"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e385b8f99af3cc885e5858d1507914a8df88531cab690bee93ce8aacec3b5db8 · sha256:069accef7a80281c… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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