Microsoft .NET prior 10.0.8 heap-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft .NET and classified as problematic. Affected by this issue is some unknown functionality. Such manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2026-32177. Local access is required to approach this attack. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft .NET. It has been rated as problematic. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

The weakness was disclosed 05/12/2026 as confirmed security update guide (Website). The advisory is available at msrc.microsoft.com. This vulnerability is handled as CVE-2026-32177. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/28/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314680 (Security Update for Microsoft .NET Core SDK (May 2026)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.0.8 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (314680) and CERT Bund (WID-SEC-2026-1488). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Microsoft .NET Framework
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Microsoft Visual Studio 2026
  • Oracle Linux
  • RESF Rocky Linux
  • Microsoft Visual Studio Code
  • Microsoft .NET
  • Microsoft Visual Studio 2017
  • Microsoft Visual Studio 2022
  • Microsoft Visual Studio 2019
  • Microsoft Azure

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.3
Vendor Vector (Microsoft): 🔒

CNA Base Score: 7.3
CNA Vector (Microsoft): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Unproven

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 314680
Nessus Name: Security Update for Microsoft .NET Core SDK (May 2026)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: .NET 10.0.8

Timelineinfo

05/12/2026 VulDB entry created
05/12/2026 +0 days Advisory disclosed
05/12/2026 +0 days Countermeasure disclosed
07/28/2026 +76 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-32177 (🔒)
GCVE (CVE): GCVE-0-2026-32177
GCVE (VulDB): GCVE-100-363122
CERT Bund: WID-SEC-2026-1488 - Microsoft Developer Tools: Mehrere Schwachstellen

Entryinfo

Created: 05/12/2026 19:12
Updated: 07/28/2026 15:11
Changes: 05/12/2026 19:12 (33), 05/12/2026 19:15 (5), 05/12/2026 19:16 (30), 05/15/2026 06:28 (2), 06/21/2026 00:23 (12), 07/28/2026 15:11 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!