What is CVE-2026-34461?

CVE-2026-34461 is a high-severity vulnerability in Sandboxie-plus Sandboxie, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-05-05.

How severe is CVE-2026-34461?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Sandboxie-plus Sandboxie

CVE-2026-34461

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 befo…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sandboxie-plus Sandboxie — versions < 1.17.3

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-wpjw-jh2p-gwx7 (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-34461?: CVE-2026-34461 is a high-severity vulnerability in Sandboxie-plus Sandboxie, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-05-05.
How severe is CVE-2026-34461?: High severity. CVSS v3 base score is 7.8 out of 10.