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Full vulnerability report · 2024
CVE-2023-45231High confidence

Out-of-Bounds Read in EDK II Network Package

TianoCore · edk2

6.5MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SA24P003 · CSAF 2.0 · revision 2 · finalABB Product Security Incident Response Team (PSIRT)​B&R PCs vulnerable to PixieFail attack​
10 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • B&R Industrial Automation GmbH APC4100 <1.09
  • B&R Industrial Automation GmbH APC910 <=1.25
  • B&R Industrial Automation GmbH C80 <1.14
  • B&R Industrial Automation GmbH MPC3100 <1.24
  • B&R Industrial Automation GmbH PPC1200 <1.14
  • B&R Industrial Automation GmbH PPC900 <2.16
  • B&R Industrial Automation GmbH APC2200 <1.35
  • B&R Industrial Automation GmbH PPC2200 <1.35
  • B&R Industrial Automation GmbH APC3100 <1.45
  • B&R Industrial Automation GmbH PPC3100 <1.45
Summary
EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing Neighbor Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.
Remediation
The problems are corrected in the following product versions: - APC4100 1.09 - APC910 No patch will be released (Please refer to the mitigation measures specified in this advisory). - C80 1.14 - MPC3100 1.24 - PPC1200 1.14 - PPC900 2.16 - APC2200 1.35 - PPC2200 1.35 - APC3100 1.45 - PPC3100 1.45 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2023-49537

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing  Neighbor Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

What

EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing  Neighbor Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing  Neighbor Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

Likely attack path
an adjacent network → Out-of-bounds Read → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Adjacent
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-125 ↗

CWE-125: Out-of-bounds Read. The product reads data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVAdjacentAttack vector: The attacker must be on an adjacent or logically close network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
UnauthenticatedCWE-125Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2024-0126EDK2 NetworkPkg IP stack implementation: Mehrere Schwachstellen

Ein Angreifer aus dem angrenzenden Netzwerk oder ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in der EDK2 NetworkPkg IP stack implementation ausnutzen, um beliebigen Programmcode auszuführen, vertrauliche Informationen offenzulegen und einen Denial of Service Zustand auszulösen.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0679Multiples vulnérabilités dans les produits Intel

d?id=CVE-2023-35123 Référence CVE CVE-2023-38655 https://www.cve.org/CVERecord?id=CVE-2023-38655 Référence CVE CVE-2023-39539 https://www.cve.org/CVERecord?id=CVE-2023-39539 Référence CVE CVE-2023-40067 https://www.cve.org/CVERecord?id=CVE-2023-40067 Référence CVE CVE-2023-42667 https://www.cve.org/CVERecord?id=CVE-2023-42667 Référence CVE CVE-2023-43489 https://www.cve.org/CVERecord?id=CVE-2023-43489 Référence CVE CVE-2023-43747 https://www.cve.org/CVERecord?id=CVE-2023-43747 Référence CVE CVE-2023-45229 https://www.cve.org/CVERecord?id=CVE-2023-45229 Référence CVE CVE-2023-45230 https://www.cve.org/CVERecord?id=CVE-2023-45230 Référence CVE CVE-2023-45231 https://www.cve.org/CVERecord?id=CVE-2023-45231 Référence CVE CVE-2023-45232 https://www.cve.org/CVERecord?id=CVE-2023-45232 Référence CVE CVE-2023-45233 https://www.cve.org/CVERecord?id=CVE-2023-45233 Référence CVE CVE-2023-45234 https://www.cve.org/CVERecord?id=CVE-2023-45234 Référence CVE CVE-2023-45235 https://www.cve.org/CVERecord?id=CVE-2023-45235 Référence CVE CVE-2023-45236 https://www.cve.org/CVERecord?id=CVE-2023-45236 Référence CVE CVE-2023-45237 https://www.cve.org/CVERecord?id=CVE-2023-45237 Référence CVE CVE-2023-48361 https://www.cve.org/CVERecord?id=CVE-2023-48361 Référence CVE CVE-2023-49141 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
B&R Industrial Automation GmbH APC4100 <1.09; B&R Industrial Automation GmbH APC910 <=1.25; B&R Industrial Automation GmbH C80 <1.14; B&R Industrial Automation GmbH MPC3100 <1.24; B&R Industrial Automation GmbH PPC1200 <1.14; B&R Industrial Automation GmbH PPC900 <2.16; B&R Industrial Automation GmbH APC2200 <1.35; B&R Industrial Automation GmbH PPC2200 <1.35; B&R Industrial Automation GmbH APC3100 <1.45; B&R Industrial Automation GmbH PPC3100 <1.45
Fixed
B&R Industrial Automation GmbH APC4100 1.09; B&R Industrial Automation GmbH C80 1.14; B&R Industrial Automation GmbH MPC3100 1.24; B&R Industrial Automation GmbH PPC1200 1.14; B&R Industrial Automation GmbH PPC900 2.16; B&R Industrial Automation GmbH APC2200 1.35; B&R Industrial Automation GmbH PPC2200 1.35; B&R Industrial Automation GmbH APC3100 1.45; B&R Industrial Automation GmbH PPC3100 1.45
Action
The problems are corrected in the following product versions: - APC4100 1.09 - APC910 No patch will be released (Please refer to the mitigation measures specified in this advisory). - C80 1.14 - MPC3100 1.24 - PPC1200 1.14 - PPC900 2.16 - APC2200 1.35 - PPC2200 1.35 - APC3100 1.45 - PPC3100 1.45 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 16 Jan 2024 · Last source change 4 Nov 2025, 18:17 UTC · CWE-125 · Out-of-bounds Read

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-49537
Product sourceVendor CSAF · ABB Product Security Incident Response Team (PSIRT)
Remediation sourceVendor CSAF · ABB Product Security Incident Response Team (PSIRT)
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    ABB Product Security Incident Response Team (PSIRT) ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2023-49537↗Vendor CSAF · ABB Product Security Incident Response Team (PSIRT)↗CISA Vulnrichment SSVC evidence↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-45231 · cve.blacktree.nl