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CVE-2026-98439VulnerabilityPublished Updated

Microsoft · smb/server: cancel async requests when closing connection

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98439· Medium

Not known to be exploited : upgrade to 0947087678f465b64eba2acebe808d5c6cfea036 or 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851 when convenient.

Data as of 28 Oct 2026, 08:43 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in 0947087678f465b64eba2acebe808d5c6cfea036, 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade Linux to 0947087678f465b64eba2acebe808d5c6cfea036 or 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 0947087678f465b64eba2acebe808d5c6cfea036
Fixed in
  • 0947087678f465b64eba2acebe808d5c6cfea036
LinuxLinuxAffected
  • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851
Fixed in
  • 4fd5bad647bfa45eb86bfd2f03ba1bef3fcd5851
LinuxLinuxAffected
  • =5.15
Fixed in–

Description

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

References

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