Vendor
ChaN vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 7 vulnerabilities in ChaN: 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-6688, was published on 1 July 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 7
- Critical, all time
- 0
- Exploited in the wild
- 0
About ChaN
ChaN is an independent developer known for creating the FatFs generic FAT file system module.
ChaN technologies
Latest ChaN vulnerabilities
- CVE-2026-6688: ChaN FatFs buffer overflow in long filename handlinghighCVSS 7.6
- CVE-2026-6687: ChaN FatFs stack overflow in f_getlabelhighCVSS 7.6
- CVE-2026-6686: ChaN FatFs uninitialized cluster exposure in f_lseekmediumCVSS 4.6
- CVE-2026-6685: ChaN FatFs integer underflow in f_read and f_writemediumCVSS 6.1
- CVE-2026-6684: ChaN FatFs infinite loop in GPT partition scanningmediumCVSS 4.6
- CVE-2026-6683: ChaN FatFs divide by zero in exFAT sync logicmediumCVSS 4.6
- CVE-2026-6682: ChaN FatFs integer overflow in mount_volumehighCVSS 7.6
Most severe ChaN vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-6688: ChaN FatFs buffer overflow in long filename handlinghighCVSS 7.6
- CVE-2026-6687: ChaN FatFs stack overflow in f_getlabelhighCVSS 7.6
- CVE-2026-6682: ChaN FatFs integer overflow in mount_volumehighCVSS 7.6
- CVE-2026-6685: ChaN FatFs integer underflow in f_read and f_writemediumCVSS 6.1
- CVE-2026-6686: ChaN FatFs uninitialized cluster exposure in f_lseekmediumCVSS 4.6
- CVE-2026-6684: ChaN FatFs infinite loop in GPT partition scanningmediumCVSS 4.6
- CVE-2026-6683: ChaN FatFs divide by zero in exFAT sync logicmediumCVSS 4.6
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 7 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/chan.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "ChaN vulnerabilities", https://junglewise.ai/threats/vendors/chan, 26 September 2026.