CVE-2026-34458Sandboxie-Plus privilege escalation via INI CRLF injection bypassing EditAdminOnly
Updated under an hour ago ()
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It affects sandboxie-plus Sandboxie and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, an INI injection vulnerability allows any standard local user to bypass configuration restrictions (EditAdminOnly and ConfigPassword) and inject arbitrary directives into the global Sandboxie.ini configuration file. The background service skips authorization checks for IPC messages targeting sections beginning with UserSettings_, but does not sanitize CRLF characters in either the value parameter (via MSGID_SBIE_INI_ADD_SETTING) or the setting name parameter (via MSGID_SBIE_INI_SET_SETTING). An attacker can inject a new sandbox section header with unrestricted permissions, enabling sandbox escape and SYSTEM privilege escalation. This issue has been fixed in version 1.17.3.
- CVSS
- 9.3 CRITICAL (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- Weakness (CWE)
- CWE-93
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- May 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sandboxie-plus Sandboxie sandboxie_plus:sandboxie (from the name) | before 1.17.3 | CNA record |
sandboxie-plus sandboxie sandboxie-plus:sandboxie | before 1.17.3 | NVD |
References
- https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-6xqg-2cjq-95qfx-refsource-confirm, exploit, vendor-advisory
- https://github.com/sandboxie-plus/Sandboxie/releases/tag/v1.17.3x-refsource-misc, patch, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.