# CVE-2025-4600

## Summary

- **CVE ID:** CVE-2025-4600
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:L/SA:L)
- **CWE:** CWE-444
- **Published:** May 16, 2025
- **Last Modified:** Mar 13, 2026

## Description

A request smuggling vulnerability existed in the Google Cloud Classic Application Load Balancer due to improper handling of chunked-encoded HTTP requests. This allowed attackers to craft requests that could be misinterpreted by backend servers. The issue was fixed by disallowing stray data after a chunk, and is no longer exploitable. No action is required as Classic Application Load Balancer service after 2025-04-26 is not vulnerable.

## Affected Products

- Google Cloud — Classic Application Load Balancer (0)

## References

- [CNA](https://cloud.google.com/support/bulletins#gcp-2025-027)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 9.3

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._