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VulnerabilityPublished

CVE-2026-32603: Sandboxie · Improper Input Validation

Affects SandboxieSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High : upgrade to 1.17.3 soon.

Data as of 2 Nov 2026, 10:58 UTC

CVSS 4.0 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.17.3
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade Sandboxie and sandboxie-plus/Sandboxie to 1.17.3.

Affected software

ProductAffectedFixed in
sandboxie-plusSandboxieAffected
  • <1.17.3
Fixed in
  • 1.17.3
GitHubsandboxie-plus/Sandboxiepkg:github/sandboxie-plus/SandboxieOther threatsAffected
  • <1.17.3
Fixed in
  • 1.17.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Sandboxie to version 1.17.3 or later where the vulnerability is fixed. For users unable to update immediately, switching to the Security Hardened Sandbox configuration provides an effective workaround. No other mitigations are specified.

Description

Sandboxie versions 1.17.2 and earlier contain a local denial of service vulnerability in the kernel driver. An unprivileged process inside a Standard Sandbox can send a malformed IOCTL to the SandboxieDriverApi device, causing a kernel crash (BSOD). This affects the Standard Sandbox configuration regardless of administrator privilege dropping, but not the Security Hardened Sandbox configuration. The issue is fixed in version 1.17.3. Users unable to update can mitigate by using the Security Hardened Sandbox configuration.

References

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