CVE-2026-7270
Freebsd 13.5 … 15.0
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2026-7270 is a high-severity Operator Precedence Logic Error (CWE-783) vulnerability in Freebsd Freebsd. Its CVSS base score is 7.8 (High).
Operationally, ranked at the 8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-7270 is an operator precedence bug (CWE-783) in the FreeBSD kernel that triggers a buffer overflow, enabling attacker-controlled data to overwrite adjacent execve(2) argument buffers. This vulnerability affects FreeBSD systems, with the issue published on 2026-04-30 and assigned a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
The vulnerability is exploitable by an unprivileged local user requiring low privileges (PR:L) and low attack complexity (AC:L), with no user interaction needed. Successful exploitation allows the attacker to achieve superuser privileges, granting high impacts on confidentiality, integrity, and availability.
The FreeBSD security advisory SA-26:13.exec, available at https://security.freebsd.org/advisories/FreeBSD-SA-26:13.exec.asc, provides details on mitigation measures and patches.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-26353
Vulnerability Data
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.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and static analysis directly find incorrect evaluation results caused by precedence mistakes.
Documented development standards and coding rules can require constructs that eliminate ambiguous operator precedence.
Engineering principles can mandate explicit parentheses and precedence rules that structurally prevent the logic error from being written.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices (reviews, static analysis, testing) directly catch precedence errors while the control also addresses many other development risks.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect logic errors caused by precedence issues.
Secure development lifecycle includes code review and testing that can catch precedence errors.
Secure coding standards and guidelines directly address operator precedence mistakes.