CVE-2026-32952— go-ntlmssp NTLM challenges can panic on malformed payloads
Quick assessment
Affected
Azure go-ntlmssp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
go-ntlmssp是Microsoft Azure开源的一个HTTP NTLM认证协议实现包。 go-ntlmssp 0.1.1之前版本存在输入验证错误漏洞，该漏洞源于恶意NTLM挑战消息可能导致切片越界恐慌，从而崩溃使用ntlmssp.Negotiator作为HTTP传输的Go进程。
Possible ATT&CK Techniques 1 AI
T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2026-32952
Vulnerability Information
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Vulnerability Title
go-ntlmssp NTLM challenges can panic on malformed payloads
Source: CVE Program / CVE List V5
Vulnerability Description
go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using `ntlmssp.Negotiator` as an HTTP transport. Version 0.1.1 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
go-ntlmssp 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-ntlmssp是Microsoft Azure开源的一个HTTP NTLM认证协议实现包。 go-ntlmssp 0.1.1之前版本存在输入验证错误漏洞，该漏洞源于恶意NTLM挑战消息可能导致切片越界恐慌，从而崩溃使用ntlmssp.Negotiator作为HTTP传输的Go进程。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Azure | go-ntlmssp | < 0.1.1 | - |
|
II. Public POCs for CVE-2026-32952
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2026-32952
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