VulnerabilityAnalyzed

CVE-2026-111218

HIGH 8.6EPSS 8.65%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Netgate pfSense CE 2.7.0 through 2.9.0 contains an OS command injection vulnerability that allows authenticated users with Traffic Shaper Limiters privileges to execute root commands by tampering with the limiter number field. Attackers can submit a malicious hidden 'number' value when editing a limiter, then delete it so delete_queue() passes the unquoted value to dnctl via /bin/sh as root.

CVSS 4.0: 8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 8.65% probability · 95th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-78
Affected: pfsense/pfsense
Source: disclosure@vulncheck.com

EPSS trend

EPSS moved from 8.4% on 16 October 2026 to 8.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

https://abraxaslabs.tech/research/pfsense-ce-leftoversIssue Tracking
https://abraxaslabs.tech/research/pfsense-limiter-numberExploit, Issue Tracking, Mitigation
https://github.com/abraxas/pfsense-limiter-numberThird Party Advisory
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/shaper.inc#L3820-L3821Product
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/shaper.inc#L3959Product
https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.0-through-2.9.0-os-command-injection-via-traffic-shaper-limitersThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.