Summary
Impact: Spoofing. Microsoft rating: Moderate. Not known to be exploited — Exploitation Unlikely. Customer action: Required.
Details
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
An attacker must induce the user into launching a crafted malicious link and confirming the launch of the Snipping Tool program.
According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L),but lead to no loss of availability (A:N) and integrity (I:N)? What does that mean for this vulnerability?
An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality) but not all resources within the impacted component may be divulged to the attacker. The attacker cannot make changes to disclosed information (Integrity) or limit access to the resource (Availability).
How could an attacker exploit this vulnerability?
An attacker could induce the user into clicking a specially crafted link in a Web browser or other URL source, by embedding it in a Web page or email message. If the user approves the launching of the link, the crafted URL can induce the computer to connect to an SMB server of the attacker’s choosing, which would disclose the user’s NTLMv2 hash to the attacker, who could use this to authenticate as the user.
Security updates
10.0.17763.8644 — https://support.microsoft.com/help/5082123
10.0.20348.5020 — https://support.microsoft.com/help/5082142
10.0.19044.7184 — https://support.microsoft.com/help/5082200
10.0.26100.32690 — https://support.microsoft.com/help/5082063
10.0.26200.8246 — https://support.microsoft.com/help/5083769
10.0.22631.6936 — https://support.microsoft.com/help/5082052
10.0.25398.2274 — https://support.microsoft.com/help/5082060
10.0.28000.1836 — https://support.microsoft.com/help/5083768
10.0.14393.9060 — https://support.microsoft.com/help/5082198
6.2.9200.26026 — https://support.microsoft.com/help/5082127
6.3.9600.23132 — https://support.microsoft.com/help/5082126
Vulnerabilities 1
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Medium 4.3CVE-2026-33829 Public exploit
Windows Snipping Tool Spoofing Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Snipping Tool allows an unauthorized attacker to perform spoofing over a network.
Revision history
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#1
Information published.
References
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CVE-2026-33829 Windows Snipping Tool Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33829
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss