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CVE-2026-7270

Local privilege escalation via execve()

HIGH
7.8
CVSS Score
Published: April 30, 2026 at 07:02 AM UTC
Updated: June 17, 2026 at 11:02 AM UTC
1 product affected across 1 vendorFreeBSD

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

An operator precedence bug in the kernel results in a scenario where a buffer overflow causes attacker-controlled data to overwrite adjacent execve(2) argument buffers. The bug may be exploitable by an unprivileged user to obtain superuser privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FreeBSD· Freebsd
95%
13.5-RELEASE ≤ v < p1314.3-RELEASE ≤ v < p1214.4-RELEASE ≤ v < p315.0-RELEASE ≤ v < p713.513.5 beta313.5 p113.5 p1013.5 p1113.5 p1213.5 p213.5 p313.5 p413.5 p513.5 p613.5 p713.5 p813.5 p913.5-RELEASE14.314.3 p114.3 p1014.3 p1114.3 p214.3 p314.3 p414.3 p514.3 p614.3 p714.3 p814.3 p914.3-RELEASE14.414.4 p114.4 p214.4 rc114.4-RELEASE15.015.0 p115.0 p215.0 p315.0 p415.0 p515.0 p615.0-RELEASE
Affected range stops below p12, so it looks safe — our inference, not a vendor statement
Affected range stops below p13, so it looks safe — our inference, not a vendor statement
Affected range stops below p3, so it looks safe — our inference, not a vendor statement
Affected range stops below p7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Vendor Advisory
Source: cverecord
https://security.freebsd.org/advisories/FreeBSD-SA-26:13.exec.asc
Source: af854a3a-2127-422b-91ae-364da2661108
https://blog.calif.io/p/cve-2026-7270-how-i-get-root-on-freebsd
Source: af854a3a-2127-422b-91ae-364da2661108
https://news.ycombinator.com/item?id=48077971

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-783

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