Is CVE-2023-45236 actively exploited?

No active exploitation of CVE-2023-45236 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-45236 be exploited remotely?

Yes. CVE-2023-45236 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-45236?

CVE-2023-45236 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2023-45236

HIGH

CVE-2023-45236

CWE-200Published: January 16, 2024· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-45236 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Affected Vendors & Products

tianocore1 product(s)

edk2

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h

News & Research Mentioning CVE-2023-45236

ABB B&R PCs

CISA Alerts· May 21, 2026

View CSAF Summary ABB became aware of vulnerability in the product versions listed as affected in the advisory. An update is now available that addresses and remediates the vulnerability. A network attacker could exploit the vulnerabilities to execute remote code, initiate DoS attacks, conduct DNS cache poisoning, or extract sensitive information. The following versions of ABB B&R PCs are affected: APC4100 <1.09, 1.09 (CVE-2023-45229, CVE-2023-45230, CVE-2023-45231, CVE-2023-45232, CVE-2023-45233, CVE-2023-45234, CVE-2023-45235, CVE-2023-45236, CVE-2023-45237) APC910 <=1.25 (CVE-2023-45229, CVE-2023-45230, CVE-2023-45231, CVE-2023-45232, CVE-2023-45233, CVE-2023-45234, CVE-2023-45235, CVE-2023-45236, CVE-2023-45237) C80 <1.14, 1.14 (CVE-2023-45229, C [xlite_meta score:73 src:CISA Alerts xlite_fp:e0c2b058f33c6d42576d055006ce59ae2d1c401fc8c33f4fb6ff9a25bb5fa598]