PT-2026-54929 · Fatfs · Fatfs
Hd Moore
+1
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Published
2026-07-01
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Updated
2026-07-06
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CVE-2026-6687
CVSS v3.1
7.6
High
| Vector | AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
FatFs versions R0.16 and earlier
Description
A stack-based buffer overflow occurs in the
f getlabel() function. This issue arises because the exFAT label length XDIR NumLabel is trusted without enforcing the maximum limits defined by the specification.Recommendations
As a temporary workaround, consider restricting the use of the
f getlabel() function until a patch is available.Exploit
Fix
Stack Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Fatfs