CVE-2026-34461
7.8 · HIGHOverview
CVE-2026-34461 is a high-severity vulnerability affecting sandboxie-plus sandboxie. It was published on May 5, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGID_SBIE_INI_RUN_SBIE_CTRL message is handled before normal sandbox and impersonation checks, and for non-sandboxed callers, the handler copies the trailing message payload into a fixed-size WCHAR ctrlCmd[128] stack buffer using memcpy without verifying the length fits within the buffer. The service pipe is created with a NULL DACL, allowing any local interactive process to connect and send an oversized payload to overflow the stack. This can lead to a crash of the SbieSvc service or potential code execution as SYSTEM. This issue has been fixed in version 1.17.3.
Remediation
Check the references section for vendor advisories and patches from sandboxie-plus. Update sandboxie to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sandboxie-plus | sandboxie | >= 0, < 1.17.3 | Affected |
Frequently Asked Questions
What is CVE-2026-34461?
CVE-2026-34461 is a high-severity vulnerability affecting sandboxie-plus sandboxie. It was published on May 5, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2026-34461?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-34461?
Check the references section for vendor advisories and patches from sandboxie-plus. Update sandboxie to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-34461?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-34461 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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