{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80155 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-80155 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-80155 is a critical authentication bypass vulnerability in LANTRONIX EMG7500, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-80155 and fix it if it is affected.\n\nWhat it is: CVE-2026-80155 is a critical authentication bypass vulnerability in LANTRONIX EMG7500, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-80155 in the wild and no public exploit code.\n\nAffected product: LANTRONIX EMG7500. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-80155/ (Markdown: https://insights.sbomify.com/CVE-2026-80155/index.md)","id":"CVE-2026-80155","markdown":"https://insights.sbomify.com/CVE-2026-80155/index.md","name":"CVE-2026-80155","record":{"aliases":["GHSA-h7c7-c453-99x2"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Lantronix OOB devices","requires_auth":"none","summary":"Unauthenticated attackers can bypass authentication via path truncation to read configs, upload files, and execute code on Lantronix devices.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Lantronix SLC8000 before firmware v9.7.0.5, SLC9000 before firmware v9.7.0.2, 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; by supplying a cookie value of a specific length an attacker causes the path to truncate at the required delimiter and leverages path traversal to redirect authentication validation to an arbitrary on-disk file such as the local user database, bypassing all session checks. Attackers can use this vulnerability to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-connected devices.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Lantronix Autonomous Out-of-Band Devices Unauthenticated Authentication Bypass via snprintf Path Truncation","id":"CVE-2026-80155","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Lantronix Autonomous Out-of-Band Devices Arbitrary File Write via Upload Filename Validation Bypass","id":"CVE-2026-80156"},"packages":[],"prev":{"headline":"Lantronix Autonomous Out-of-Band Devices Predictable Session Token with Validation Bypass","id":"CVE-2026-80154"},"products":["EMG7500","EMG8500","SLB882","SLC8000","SLC9000","SLCx-02","SLCx-03"],"published":"2026-09-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-24","vendors":["LANTRONIX"]},"summary":"Unauthenticated attackers can bypass authentication via path truncation to read configs, upload files, and execute code on Lantronix devices.","url":"https://insights.sbomify.com/CVE-2026-80155/"}