| Reporter | Title | Published | Views | Family All 11 |
|---|---|---|---|---|
 | CVE-2026-6683 | 1 Jul 202613:41 | – | attackerkb |
 | CVE-2026-6683 | 2 Jul 202600:38 | – | circl |
 | CVE-2026-6683 FatFs Divide-by-Zero in exFAT Sync | 1 Jul 202613:41 | – | cvelist |
 | EUVD-2026-40993 | 1 Jul 202613:41 | – | euvd |
 | vulns-2026-fatfs-chance | 29 Jun 202620:02 | – | githubexploit |
 | CVE-2026-6683 | 1 Jul 202613:41 | – | mend |
 | CVE-2026-6683 | 1 Jul 202615:17 | – | nvd |
 | PT-2026-54925 | 1 Jul 202600:00 | – | ptsecurity |
 | CVE-2026-6683: Divide By Zero | 1 Jul 202600:00 | – | rapid7 |
 | Unpatched Flaws Disclosed in Filesystem Bundled Into Millions of Embedded Devices | 3 Jul 202620:19 | – | thn |
10
[
{
"vendor": "ChaN",
"product": "FatFs",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "R0.16",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| BPB_FATSz32 | nested | ff.c | Integer overflow in mount_volume() when BPB_FATSz32 is crafted to produce a large value, causing the database to land inside the FAT region. | CWE-190 |
| NumFATs | nested | ff.c | Integer overflow in mount_volume() when BPB_FATSz32 is crafted to produce a large value, causing the database to land inside the FAT region. | CWE-190 |
| BPB_NumClusEx | nested | ff.c | Divide-by-zero in sync_fs() when BPB_NumClusEx is 0, making the divisor (n_fatent - 2) equal to zero. | CWE-369 |
| GPTH_PtNum | nested | ff.c | Infinite loop in find_volume() when GPTH_PtNum is set to its maximum value (0xFFFFFFFF) in a GPT-formatted disk. | CWE-835 |
| fp_sect | nested | ff.c | Integer underflow in dirty-sector cache flush logic when file clusters are not laid out in order, leading to an out-of-bounds memory write. | CWE-191 |
| sect | nested | ff.c | Integer underflow in dirty-sector cache flush logic when file clusters are not laid out in order, leading to an out-of-bounds memory write. | CWE-191 |
| cc | nested | ff.c | Integer underflow in dirty-sector cache flush logic when file clusters are not laid out in order, leading to an out-of-bounds memory write. | CWE-191 |
| f_lseek | nested | ff.c | Stale cluster data is readable after seeking past the end of a file because FatFs does not zero the newly allocated storage. | CWE-908 |
| f_getlabel | nested | ff.c | Stack buffer overflow in f_getlabel() when an exFAT volume has an oversized label, overflowing the caller's label buffer. | CWE-121 |
| XDIR_NumLabel | nested | ff.c | Stack buffer overflow in f_getlabel() when an exFAT volume has an oversized label, overflowing the caller's label buffer. | CWE-121 |
10
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25 Oct 2026 17:10Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.14.6
EPSS0.00306
SSVC