Vulnerability DatabaseCVE-2026-7270
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CVE-2026-7270
Published:April 30, 2026
Updated:May 18, 2026
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 Packages
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.3.0 <release/14.3.0-p12
Fix Suggestion:
Update to version release/14.3.0-p12
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/13.5.0 <release/13.5.0-p13
Fix Suggestion:
Update to version release/13.5.0-p13
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/15.0.0 <release/15.0.0-p7
Fix Suggestion:
Update to version release/15.0.0-p7
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.4.0 <release/14.4.0-p3
Fix Suggestion:
Update to version release/14.4.0-p3
Related Resources (3)
https://news.ycombinator.com/item?id=48077971
https://blog.calif.io/p/cve-2026-7270-how-i-get-root-on-freebsd
https://security.freebsd.org/advisories/FreeBSD-SA-26:13.exec.asc
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CVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Operator Precedence Logic Error
CWE-783
EPSS
Base Score:
0.01