AUGUST 4, 2026
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Case File

CVE-2023-30312

HIGH · CVSS 7.3 EPSS 0.29%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-05-28 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.3. It may lead to a denial-of-service condition.

CVE
CVE-2023-30312
Severity
HIGH
CVSS
7.3
EPSS
0.29%

Original NVD Description

An issue discovered in OpenWrt 18.06, 19.07, 21.02, 22.03, and beyond allows off-path attackers to hijack TCP sessions, which could lead to a denial of service, impersonating the client to the server (e.g., for access to files over FTP), and impersonating the server to the client (e.g., to deliver false information from a finance website). This occurs because nf_conntrack_tcp_no_window_check is true by default.