Vulnerability · Published Aug 27, 2026 · Assigned by ASUS

CVE-2026-19398

Medium 6.8

In plain English

A medium-severity out-of-bounds write in FA507NU from ASUS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 4.0)6.8Medium

Exploit odds (30 days)0.2%top 94.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the ' Security Update for ASUS FA507NV / FA507NU BIOS ' section on the ASUS Security Advisory for more information.

Affected products (as reported)

Vendor	Product	Versions
ASUS	FA507NV	318
ASUS	FA507NU	318

Weakness: CWE-787 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://www.asus.com/security-advisory