CVE-2026-34464Disclosure(sandboxie-plus / sandboxie)

LOWCVSS 8.8 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field from NAMED_PIPE_OPEN_REQ into a fixed WCHAR pipename[160] stack buffer using wcscat without verifying null termination. The handler only enforces a minimum packet size, and since the service pipe accepts variable-length messages, a sandboxed caller can fill the server[48] field with non-zero data and append additional controlled wide characters after the structure. wcscat then reads past the fixed field and overflows the stack buffer in the SYSTEM service. This message is restricted to sandboxed callers, making it a sandbox escape vector. 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-121CWE-170

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • sandboxie

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Products
sandboxie

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-05: 2Technical Details · 2026-05-05: 105-05
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-34464 Stack Buffer Overflow in Sandboxie-Plus NamedPipeServer OpenHandler Versions 1.17.2 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-34464

    Post summary

    The text announces CVE-2026-34464, describing a stack buffer overflow in Sandboxie‑Plus NamedPipeServer OpenHandler (v1.17.2) and links to a vulnerability details page for more information.

    0000036
    4.0K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-34464 Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field fr… https://www.cve.org/CVERecord?id=CVE-2026-34464

    Post summary

    The snippet references CVE-2026-34464 for Sandboxie‑Plus, noting a flaw in NamedPipeServer::OpenHandler where a server field is improperly copied, but offers no further technical details, exploit code, or mitigation information.

    00000143
    57.4K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appsandboxie-plussandboxie---

Explore more