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CVE-2026-32603— Sandboxie kernel driver denial of service via malformed IOCTL from sandboxed process

Quick assessment

Affected
sandboxie-plus Sandboxie
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.

Sandboxie是sandboxie-plus开源的一款基于沙盒的隔离软件。 Sandboxie 1.17.2及之前版本存在输入验证错误漏洞，该漏洞源于内核驱动中未授权进程发送畸形IOCTL，可能导致本地拒绝服务攻击。

AI Predicted 6.5 Difficulty: Easy EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 1

VendorProduct Version RangeStatus
sandboxie-plus Sandboxie < 1.17.3 affected
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I. Basic Information for CVE-2026-32603

Vulnerability Information
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Vulnerability Title
Sandboxie kernel driver denial of service via malformed IOCTL from sandboxed process
Source: CVE Program / CVE List V5
Vulnerability Description
Sandboxie is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, a local denial of service vulnerability exists in the Sandboxie kernel driver. An unprivileged process running inside a Standard Sandbox can send a malformed IOCTL to the \Device\SandboxieDriverApi driver, triggering an immediate kernel crash (BSOD). The vulnerability affects the Standard Sandbox configuration both with and without dropped administrator privileges, but does not affect the Security Hardened Sandbox configuration. This issue has been fixed in version 1.17.3. Users who cannot update can use the Security Hardened Sandbox configuration as a workaround.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sandboxie 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sandboxie是sandboxie-plus开源的一款基于沙盒的隔离软件。 Sandboxie 1.17.2及之前版本存在输入验证错误漏洞，该漏洞源于内核驱动中未授权进程发送畸形IOCTL，可能导致本地拒绝服务攻击。
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
sandboxie-plus Sandboxie < 1.17.3 -

II. Public POCs for CVE-2026-32603

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III. Intelligence Information for CVE-2026-32603

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Vendor Advisories for CVE-2026-32603 (1)

Vendor Pages for CVE-2026-32603 (1)

Same Patch Batch · sandboxie-plus · 2026-05-05 · 8 CVEs total

CVE-2026-34596 Sandboxie-Plus local privilege escalation via TOCTOU race condition in UpdUtil addon insta
CVE-2026-34462 Sandboxie-Plus ProcessServer boxname stack buffer overflows via unterminated wide string c
CVE-2026-34458 Sandboxie-Plus privilege escalation via INI CRLF injection bypassing EditAdminOnly
CVE-2026-34527 Sandboxie-Plus EditPassword hash entropy reduced from 160 bits to 80 bits due to incorrect
CVE-2026-34459 Sandboxie-Plus sandbox escape via uninitialized memory leak and stack overflow in GetRawIn
CVE-2026-34464 Sandboxie-Plus NamedPipeServer OpenHandler stack overflow via unterminated server field
CVE-2026-34461 Sandboxie-Plus SbieIniServer RunSbieCtrl stack buffer overflow allows local privilege esca

IV. Related Vulnerabilities

Same product: Sandboxie
Same vendor: sandboxie-plus
Same weakness: CWE-20

V. Comments for CVE-2026-32603

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