CVE-2025-54132
highpriority · track · 30EPSS 0.004 · 32 %ileDEEUNLUSEPSS · scored 2026-10-27
Cursor is a code editor built for programming with AI. In versions below 1.3, Mermaid (which is used to render diagrams) allows embedding images which then get rendered by Cursor in the chat box. An attacker can use this to exfiltrate sensitive information to a third-party attacker controlled server through an image fetch after successfully performing a prompt injection. A malicious model (or hallucination/backdoor) might also trigger this exploit at will. This issue requires prompt injection from malicious data (web, image upload, source code) in order to exploit. In that case, it can send sensitive information to an attacker-controlled external server. This is fixed in version 1.3.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (85)
Products and version ranges known to be affected.
- Microsoft .NET Framework 2.0 SP2 on Windows Server 2008 SP2all versionscert_bundDEcpe:/a:microsoft:.net_framework:2.0_sp2_on_windows_server_2008_sp2
- Microsoft .NET Framework 3.0 SP2 on Windows Server 2008 SP2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.0_sp2_on_windows_server_2008_sp2
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.7.2_on_windows_10_version_1607
- Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.7.2_on_windows_10_version_1809
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8_on_windows_10_version_1809
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8_on_windows_10_version_21h2
- Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8_on_windows_10_version_22h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_10_version_21h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_10_version_22h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_11_version_22h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_11_version_23h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_11_version_24h2
- Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_and_4.8.1_on_windows_11_version_25h2
- Microsoft .NET Framework 3.5 on Windows Server 2008 SP2all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5_on_windows_server_2008_sp2
- Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5.1_on_windows_server_2008_r2_sp1
- Microsoft .NET Framework 4.6.2 on Windows Server 2008 SP2all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.6.2_on_windows_server_2008_sp2
- Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.6.24.74.7.14.7.2_on_windows_server_2008_r2_sp1
- Microsoft .NET Framework 4.8 on Windows 10 Version 1607all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.8_on_windows_10_version_1607
- Microsoft .NET Framework 4.8 on Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.8_on_windows_server_2008_r2_sp1
advisories (2)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0313Kwetsbaarheden verholpen in Microsoft Developer ToolsNL2025-10-14csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Developer Tools.
- WID-SEC-W-2025-2278Microsoft Developer Tools: Mehrere SchwachstellenDeutsch2025-10-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Visual Studio, .NET Framework, Windows Server, ASP.NET, PowerShell und Windows ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um seine Privilegien zu erhöhen, und um Informationen offenzulegen.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-54132cnnvd
- https://cursor.com/downloadsPatchcnnvd
- https://github.com/cursor/cursor/security/advisories/GHSA-43wj-mwcc-x93pcnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54132cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-54132cnnvd
- https://github.com/cursor/cursor/security/advisories/GHSA-43wj-mwcc-x93penisa_euvd
- https://github.com/cursor/cursor/security/advisories/GHSA-43wj-mwcc-x93pVendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan