Microsoft · nfc: st21nfca: validate received frame size
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in f526c218a149a30f110ce434ff17e033042404b8 : update Microsoft when convenient.
Data as of 28 Oct 2026, 09:13 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in f526c218a149a30f110ce434ff17e033042404b8, d4008c3499dba7829bfe002edd99a8bff8ae3a7c, d0596ee6c4b928a5c288790522a7495ee867da72 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
This vulnerability concerns the NFC component 'st21nfca' related to validating the received frame size. The information provided is minimal and does not describe the nature of the flaw, its impact, or exploitation details. The affected product is Microsoft software versions 3.0 and 4.0. No CVSS score or detailed technical information is available.