CVE-2023-4785 HIGH

CVE-2023-4785: Denial of Service in gRPC Core

Vendor Google
Product gRPC
Weakness CWE-248
Published September 13, 2023
Last update January 12, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected.

Key dates

02Disclosure timeline

September 13, 2023 CVE published
January 12, 2026 Record updated