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CRITICAL

CVE-2026-80155

CVSS v3

10

CRITICAL

EPSS Score

1.6 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Lantronix SLC8000 before firmware v9.7.0.5, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain an authentication bypass vulnerability in the web management portal upload endpoint that allows unauthenticated attackers to read sensitive configuration files and upload files to arbitrary filesystem locations, leading to remote code execution. The web configuration server constructs the session cookie file path using snprintf with a fixed-size buffer

Technical details

CVSS v3 Vector
3.1
Published
2026-09-22
Last Modified
2026-09-22

Frequently asked questions

What is CVE-2026-80155?

Lantronix SLC8000 before firmware v9.7.0.5, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain an authentication bypass vulnerability in the web management portal upload endpoint that allows unauthenticated attackers to read sensitive configuration files and upload files to arbitrary filesystem locations, leading to remote code execution. The web configuration server constructs the session cookie file path using snprintf with a fixed-size buffer

Is CVE-2026-80155 actively exploited?

Active exploitation of CVE-2026-80155 has not been confirmed. The EPSS score is 1.6%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-80155?

CVE-2026-80155 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string 3.1.

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