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Matt D.

F23: Debug SetVersion root command injection (V3.5.2.1)

original finding or lead

Last updated November 8, 2026

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Document type: local CVE candidate assessment, not a published CVE Record. CVE ID: unassigned. Product scope: Anpviz IPC-D240W-S V3.5.2.1 captured from the owner’s MCA40E camera; the V3.6.3.1 comparison image is an MCA50E image sent in error and was not flashed to this model.

Finding

The old debug command placed an argument in a root shell command and was used in a live root-shell test after debug enablement. The new handler validates and writes directly to a file.

Status in this image: original finding or lead.

Evidence limit: Requires the debug service to be enabled with a valid administrator credential in the observed old chain.

Classification and severity

  • Proposed CWE: CWE-78
  • CVSS v4.0 score: 8.5 High, provisional scenario
  • CVSS v4.0 vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • Scoring basis: Old-image scenario includes the administrator credential required to enable debug; new debug-chain behavior was not tested.
  • CVE candidacy: Needs coordinator/CNA review for grouping, affected models and version status; do not equate this finding ID with a CVE ID.

Source screenshots

The PNGs are rendered, line-numbered excerpts of existing Ghidra C-like decompilation, not photographs of the Ghidra GUI or recovered vendor source. The original export is authoritative; image selection can omit relevant lines elsewhere in the function.

  • No verified related CVE linked to this specific finding; this is not an exhaustive database search.

Case references

Source exports