CVE-2026-6685
AI Analysis
Technical Summary
CVE-2026-6685 is an integer underflow vulnerability (CWE-191) in FatFs versions <=0.16. The CVSS 3.1 vector (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H) indicates that exploitation requires physical access, has low complexity, and no privileges or user interaction are needed. The vulnerability impacts the integrity and availability of the system but does not affect confidentiality. There is no vendor advisory or patch available at this time, and no known exploits in the wild have been reported.
Potential Impact
The vulnerability can lead to a high impact on integrity and availability of systems using affected versions of FatFs. Confidentiality is not impacted. Since physical access is required, the attack surface is limited to scenarios where an attacker can physically interact with the device or system using the vulnerable FatFs version.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit physical access to devices using FatFs <=0.16 to trusted personnel only. Monitor vendor channels for updates or patches addressing this vulnerability.
CVE-2026-6685
CVSS v3.1
Score 6.1medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6685 is an integer underflow vulnerability (CWE-191) in FatFs versions <=0.16. The CVSS 3.1 vector (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H) indicates that exploitation requires physical access, has low complexity, and no privileges or user interaction are needed. The vulnerability impacts the integrity and availability of the system but does not affect confidentiality. There is no vendor advisory or patch available at this time, and no known exploits in the wild have been reported.
Potential Impact
The vulnerability can lead to a high impact on integrity and availability of systems using affected versions of FatFs. Confidentiality is not impacted. Since physical access is required, the attack surface is limited to scenarios where an attacker can physically interact with the device or system using the vulnerable FatFs version.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit physical access to devices using FatFs <=0.16 to trusted personnel only. Monitor vendor channels for updates or patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- runZero
- Date Reserved
- 2026-04-20T15:06:21.250Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45260c27e9c79719982acd
Added to database: 07/01/2026, 14:37:00 UTC
Last enriched: 07/17/2026, 08:15:58 UTC
Last updated: 08/12/2026, 21:52:46 UTC
Views: 63
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