CVE-2023-45236 MEDIUM

CVE-2023-45236: Predictable TCP ISNs in EDK II Network Package

Vendor Tianocore
Product edk2
Weakness CWE-200 · Info exposure
Published January 16, 2024
Last update November 4, 2025
View on NVD All CVEs

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

Key dates

02Disclosure timeline

January 16, 2024 CVE published
November 4, 2025 Record updated