Is CVE-2023-45234 actively exploited?

No active exploitation of CVE-2023-45234 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-45234 be exploited remotely?

Partially. CVE-2023-45234 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2023-45234?

CVE-2023-45234 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2023-45234

HIGH

CVE-2023-45234

CWE-119Published: January 16, 2024· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This

vulnerability can be exploited by an attacker to gain unauthorized

access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

NVD Source

Technical Analysis

CVE-2023-45234 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

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

ADVISORYhttp://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html

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

ADVISORYhttp://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html

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

News & Research Mentioning CVE-2023-45234

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]