CVE-2026-45255

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This is implemented using a shell script, and the code which handled network names was not careful to prevent expansion by the shell. As a result, a suitably crafted network name can be used to execute commands via a subshell.\n\nThe problem can be exploited to execute code as root on the system running bsdinstall or bsdconfig. The attacker would need to create an access point with a specially crafted name and be within range of a Wi-Fi scan. Note that bsdinstall and bsdconfig are vulnerable as soon as the user prompts them to scan for nearby networks; they do not need to actually select the malicious network."}, {"lang": "es", "value": "Cuando se solicita a bsdinstall o bsdconfig que escaneen redes Wi-Fi cercanas, construyen una lista de nombres de red y usan bsddialog(1) para solicitar al usuario que seleccione una red. Esto se implementa usando un script de shell, y el c\u00f3digo que manejaba los nombres de red no tuvo cuidado de evitar la expansi\u00f3n por parte del shell. Como resultado, un nombre de red adecuadamente elaborado puede usarse para ejecutar comandos a trav\u00e9s de un subshell.\n\nEl problema puede ser explotado para ejecutar c\u00f3digo como root en el sistema que ejecuta bsdinstall o bsdconfig. El atacante necesitar\u00eda crear un punto de acceso con un nombre especialmente elaborado y estar dentro del alcance de un escaneo Wi-Fi. Tenga en cuenta que bsdinstall y bsdconfig son vulnerables tan pronto como el usuario les solicita que escaneen redes cercanas; no necesitan seleccionar realmente la red maliciosa."}], "id": "CVE-2026-45255", "lastModified": "2026-07-23T16:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45255", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-21T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-21T10:16:26.497", "references": [{"source": "secteam@freebsd.org", "tags": ["Vendor Advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:23.bsdinstall.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.4-RELEASE,p5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.3-RELEASE,p14)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "created": "2026-05-21T11:30:05.784794+00:00", "updated": "2026-05-21T16:30:14.621744+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}