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CVE-2026-98754VulnerabilityPublished Updated

Microsoft · tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98754· High

Not known to be exploited · fixed in 821050631750e982007c0856c119346edba51cae : patch Microsoft soon.

Data as of 28 Oct 2026, 08:59 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in 821050631750e982007c0856c119346edba51cae, 57753441ef84bee3bf0e9ee1e3778d119c44aa32, 88f6ecb058801e9ce7b9aabc966530118d7cd53c +2

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 to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb, < 821050631750e982007c0856c119346edba51cae
Fixed in
  • 821050631750e982007c0856c119346edba51cae
LinuxLinuxAffected
  • ≥ 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb, < 57753441ef84bee3bf0e9ee1e3778d119c44aa32
Fixed in
  • 57753441ef84bee3bf0e9ee1e3778d119c44aa32
LinuxLinuxAffected
  • ≥ 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb, < 88f6ecb058801e9ce7b9aabc966530118d7cd53c
Fixed in
  • 88f6ecb058801e9ce7b9aabc966530118d7cd53c
LinuxLinuxAffected
  • ≥ 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb, < 03b49c991abb8d021ca6fe51cd173447236b0552
Fixed in
  • 03b49c991abb8d021ca6fe51cd173447236b0552
LinuxLinuxAffected
  • ≥ 8f03f948ba356b7cb254b45a4e78b5b3d86fd3bb, < 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4
Fixed in
  • 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4
LinuxLinuxAffected
  • =4.14
Fixed in–

Description

CVE-2026-98754 is a vulnerability in Microsoft products related to the tty component, specifically involving the vcc_cleanup function where the port lock is held when clearing the tty pointer. The advisory provides no further technical details or impact information. No CVSS score or exploit information is available.

References

Community reviews

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