CVE-2026-57155
opnsense core
- opnsense core
- Critical
- CVSS 9.9
- EPSS 0.86%
- No fixed version listed
What to do
No fixed version listed
Affected products
| Product | Affected | Fixed in |
|---|---|---|
| opnsense core | < 26.1.11 | None listed |
Advisories and fixes
- Public exploit github.com
Scores and signals
- Exploitation
- No known exploitation
- Severity
- Critical, CVSS 9.9 (v3.1, scored by GitHub_M)
- EPSS
- 0.86% chance of exploitation in the next 30 days (EPSS from FIRST, as of Oct 25, 2026)
- CISA's SSVC decision points
- Exploitation: proof of concept. Automatable: no. Technical impact: total. As of Oct 15, 2026.
- Weakness
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-73: External Control of File Name or Path; CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- Vendor
- opnsense, core
Timeline
- First listed as critical by cve.now. Affected and fixed versions come from the CVE record, once one is published.