What is GHSA-x9v2-w4w8-7v7g?

GHSA-x9v2-w4w8-7v7g is a security advisory published by GitHub Security Advisories with Critical severity. In the modem OTA stack, there is a possible stack-based buffer overflow due to improper...

Which CVE IDs does GHSA-x9v2-w4w8-7v7g cover?

GHSA-x9v2-w4w8-7v7g covers the following CVE IDs: CVE-2026-66086. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-x9v2-w4w8-7v7g?

GHSA-x9v2-w4w8-7v7g has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-x9v2-w4w8-7v7gCriticalCVSS 9.8

In the modem OTA stack, there is a possible stack-based buffer overflow due to improper...

Vendor

GitHub Security Advisories

Published

October 12, 2026

Last Modified

October 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-66086 →

📋 Description

In the modem OTA stack, there is a possible stack-based buffer overflow due to improper validation of scheduling information in SIB1 messages. This could lead to remote code execution or denial of service with no additional execution privileges needed.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-66086
https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641
https://github.com/advisories/GHSA-x9v2-w4w8-7v7g