CVE-2023-45236

Predictable TCP ISNs in EDK II Network Package

Published Jan 16, 2024 CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-49542 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.
Ubuntu USN Ubuntu USN USN-7894-1 EDK II vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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. 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.
Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8
Weaknesses

Sources

Status
PUBLISHED
Assigner
TianoCore
Published
Updated
Nov 4, 2025, 6:17 PM
Reserved
Oct 5, 2023, 8:48 PM
Status
Modified
Published
Jan 16, 2024, 4:15 PM
Modified
Jun 17, 2026, 6:28 AM
Severity
Moderate
Public date
Jan 16, 2024, 12:00 AM