What is the CVSS score of CVE-2023-33128?

CVE-2023-33128 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.0%.

Is there a patch available for CVE-2023-33128?

Yes, a patch is available for CVE-2023-33128. Update the affected software to the latest version immediately.

Net CVE-2023-33128

HIGH

Use After Free (CWE-416)

2023-06-14 secure@microsoft.com

RCE Use After Free Memory Corruption Microsoft Visual Studio 2022 Net

7.3

CVSS 3.1 · Vendor: microsoft

View

Vulnerability Assessment

Weakness	CWE CWE-416 ASVS 5.0 V15 - Secure Coding and Architecture Memory lifecycle management MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 7.3 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, user interaction required.
Exploit ScenarioDerived	A local attacker with access to the system could access freed memory to execute arbitrary code or crash the application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 1.0% exploitation probability (EPSS)

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AnalysisAI

.NET and Visual Studio Remote Code Execution Vulnerability. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Affected Packages

nuget microsoft.netcore.app.runtime.linux-arm fix: 7.0.7

nuget microsoft.netcore.app.runtime.linux-arm64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.linux-musl-arm fix: 7.0.7

nuget microsoft.netcore.app.runtime.linux-musl-arm64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.linux-musl-x64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.linux-x64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.osx-arm64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.osx-x64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.win-arm fix: 7.0.7

nuget microsoft.netcore.app.runtime.win-arm64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.win-x64 fix: 7.0.7

nuget microsoft.netcore.app.runtime.win-x86 fix: 7.0.7

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 12 packages in nuget

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Affected products include: Microsoft .Net, Microsoft Visual Studio 2022.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.3 HIGH

AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

.NET and Visual Studio Remote Code Execution Vulnerability

Threat Intelligence Overview

EPSS Score

1.0%

Top 41% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 1.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Use After Free HIGH

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.