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CVE-2026-98749VulnerabilityPublished Updated

Microsoft · tty: serial: max3100: shut down timer before freeing port

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98749· Medium

Not known to be exploited · fixed in fb668620e3b163962dabe1a674725a07aa44ff4a : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fb668620e3b163962dabe1a674725a07aa44ff4a, fb8cefd66a6055a313c993fa9e8bed9be9b088f6, db0949bbd06db0a75b4b1076f1e25194be7d956a +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < fb668620e3b163962dabe1a674725a07aa44ff4a
Fixed in
  • fb668620e3b163962dabe1a674725a07aa44ff4a
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < fb8cefd66a6055a313c993fa9e8bed9be9b088f6
Fixed in
  • fb8cefd66a6055a313c993fa9e8bed9be9b088f6
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < db0949bbd06db0a75b4b1076f1e25194be7d956a
Fixed in
  • db0949bbd06db0a75b4b1076f1e25194be7d956a
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < d1187a7deac1e90182372a188dfe33ddd2b53cba
Fixed in
  • d1187a7deac1e90182372a188dfe33ddd2b53cba
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < cbb3fcc7cd14396ccc1379c164d96a247331f2e6
Fixed in
  • cbb3fcc7cd14396ccc1379c164d96a247331f2e6
LinuxLinuxAffected
  • ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 247b8f680876313586aed4d267bfcceddc2b4901
Fixed in
  • 247b8f680876313586aed4d267bfcceddc2b4901

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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