Stack-based Buffer Overflow Affecting sandboxie-plus/Sandboxie package, versions [,1.17.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 May 2026
- disclosed5 May 2026
- creditsammy12342
Introduced: 5 May 2026
CVE-2026-34459 (opens in a new tab)How to fix?
Upgrade sandboxie-plus/Sandboxie to version 1.17.3 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow via the GetRawInputDeviceInfoSlave handler. An attacker can leak uninitialized stack memory, including sensitive data such as return addresses and stack cookies, and subsequently trigger a stack buffer overflow by supplying an attacker-controlled length to a memcpy operation, potentially enabling execution of a ROP chain to escalate privileges to SYSTEM by chaining these flaws. This is only exploitable if hardware-enforced shadow stacks (Intel CET) are not enabled, as CET prevents ROP chain execution but does not mitigate the information leak.