How severe is CVE-2026-80253?

CVE-2026-80253 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-80253 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-80253?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-80253 published?

CVE-2026-80253 was published on 2026-09-03.

CVE-2026-80253

CVE-2026-80253 is a medium-severity vulnerability with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1263.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v4: 7.0
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1263
Published: 2026-09-03
Last modified: 2026-09-03

Description

An improper physical access control issue exists in ShizenBox2 (dev-conf). If exploited, an attacker with physical access to the product may execute bootloader commands without authentication.

Frequently asked questions

What is CVE-2026-80253?: An improper physical access control issue exists in ShizenBox2 (dev-conf). If exploited, an attacker with physical access to the product may execute bootloader commands without authentication.
How severe is CVE-2026-80253?: CVE-2026-80253 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-80253 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-80253?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-80253 published?: CVE-2026-80253 was published on 2026-09-03.

References

Other CWE-1263 vulnerabilities

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CVE-2025-4386 — Medium (CVSS 6.8): Medtronic MyCareLink Patient Monitor has an internal serial interface, which allows an attacker with physical access to…
CVE-2024-28326 — Medium (CVSS 6.8): Incorrect Access Control in ASUS RT-N12+ B1 and RT-N12 D1 routers allows local attackers to obtain root terminal access…
CVE-2024-39512 — Medium (CVSS 6.6): An Improper Physical Access Control vulnerability in the console port control of Juniper Networks Junos OS Evolved…
CVE-2022-32506 — Medium (CVSS 6.4): An issue was discovered on certain Nuki Home Solutions devices. An attacker with physical access to the circuit board…

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