ASUS FA507NV/FA507NU SmiFlash SMM module out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k3.07

Summaryinfo

A vulnerability identified as problematic has been detected in ASUS FA507NV and FA507NU. Affected by this vulnerability is an unknown functionality of the component SmiFlash SMM module. This manipulation causes out-of-bounds write. This vulnerability is registered as CVE-2026-19398. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in ASUS FA507NV and FA507NU (affected version not known). Affected by this vulnerability is some unknown functionality of the component SmiFlash SMM module. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect integrity, and availability. The summary by CVE is:

“unsupported-when-assigned.” 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.

It is possible to read the advisory at asus.com. This vulnerability is known as CVE-2026-19398 since 08/10/2026. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-66834). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.4
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/10/2026 CVE reserved
08/27/2026 +17 days Advisory disclosed
08/27/2026 +0 days VulDB entry created
08/27/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: asus.com

Advisory: asus.com
Status: Confirmed

CVE: CVE-2026-19398 (🔒)
GCVE (CVE): GCVE-0-2026-19398
GCVE (VulDB): GCVE-100-396055
EUVD: 🔒

Entryinfo

Created: 08/27/2026 04:13
Updated: 08/27/2026 06:17
Changes: 08/27/2026 04:13 (63), 08/27/2026 06:17 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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