What is CVE-2026-12520?
CVE-2026-12520 is a stack buffer overflow vulnerability in the Sierra Wireless HL7800 modem driver, triggered when parsing AT responses with insufficient bounds checking on a 128-byte stack buffer. This flaw could allow remote code execution, and users should update to the latest driver version immediately.
Azərbaycanca: CVE-2026-12520 Sierra Wireless HL7800 modem sürücüsündə aşkarlanan stack buffer overflow zəifliyidir. AT cavabları işlənərkən 128-bayt stack bufferə yazılan məlumatın ölçüsü düzgün yoxlanılmadığı üçün uzaqdan kod icrasına səbəb ola bilər. İstifadəçilərə sürücünü ən son versiyaya yeniləmək tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-119
FAQ2
Which device driver is affected by CVE-2026-12520?
The Sierra Wireless HL7800 modem driver.
What type of vulnerability is CVE-2026-12520 and what is its potential impact?
It is a stack buffer overflow vulnerability that could lead to remote code execution (RCE).
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.