Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

FatFs

Product reference — FatFs by Chan · sector: Other. Cumulative disclosure record for this product across the archive.

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Product totals

Disclosures & known-exploited
	All-time	YTD
CVEs	6	6
KEV entries	0	0

Rate & severity
KEV/100	Med CVSS	Med EPSS	C	H	M	L
0.0	6.1	.0031	0	3	3	0

KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over this product's disclosures. C/H/M/L = disclosures by CVSS severity band.

Monthly disclosures

Trend (by first-seen month, full archive): █▁▁▁

Last 12 months (new CVEs by first-seen day)
Month	New CVEs
2026-07	6
2026-08	0
2026-09	0
2026-10	0

Notable CVEs

Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.

Notable (ranked)
CVE	CVSS	EPSS %ile	Severity	KEV	First seen
CVE-2026-6687	7.6	26.1	HIGH	—	2026-07-01
CVE-2026-6682	7.6	23.0	HIGH	—	2026-07-01
CVE-2026-6688	7.6	23.0	HIGH	—	2026-07-01
CVE-2026-6683	4.6	21.2	MEDIUM	—	2026-07-01
CVE-2026-6684	4.6	21.2	MEDIUM	—	2026-07-01
CVE-2026-6686	4.6	15.5	MEDIUM	—	2026-07-01

Recent CVEs

Most recently seen
CVE	CVSS	EPSS %ile	Severity	KEV	First seen
CVE-2026-6688	7.6	23.0	HIGH	—	2026-07-01
CVE-2026-6687	7.6	26.1	HIGH	—	2026-07-01
CVE-2026-6686	4.6	15.5	MEDIUM	—	2026-07-01
CVE-2026-6684	4.6	21.2	MEDIUM	—	2026-07-01
CVE-2026-6683	4.6	21.2	MEDIUM	—	2026-07-01
CVE-2026-6682	7.6	23.0	HIGH	—	2026-07-01

KEV entries

No entries in the CISA KEV catalog.

Vendor: Chan — all products and the full vendor record.

Methodology

A product is a (vendor, product) pair as named in the affected-product data. Rate statistics are arithmetic over published figures. Counts key to first-seen day. Raw counts are not comparable across products; this is a reference page assembled from the public record, not a ranking by our judgment.

Sources. CVE Program (cvelistV5), NVD (NIST), CISA KEV, FIRST EPSS.