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CVE-2026-98753VulnerabilityPublished Updated

Microsoft · tty: tty_port: restore TTY_IO_ERROR on activation failure

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98753· High

Not known to be exploited · fixed in e24625bff786fa3f22cc38b5038362b910621e83 : patch Microsoft soon.

Data as of 7 Nov 2026, 12:47 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in e24625bff786fa3f22cc38b5038362b910621e83, 6388409b711eb91b14fa075a4d861ccc4df1cfe7, 56964f6a31238fb41d5830bb42520c5b10ff7d8f +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
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < e24625bff786fa3f22cc38b5038362b910621e83
Fixed in
  • e24625bff786fa3f22cc38b5038362b910621e83
LinuxLinuxAffected
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < 6388409b711eb91b14fa075a4d861ccc4df1cfe7
Fixed in
  • 6388409b711eb91b14fa075a4d861ccc4df1cfe7
LinuxLinuxAffected
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < 56964f6a31238fb41d5830bb42520c5b10ff7d8f
Fixed in
  • 56964f6a31238fb41d5830bb42520c5b10ff7d8f
LinuxLinuxAffected
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < 16032c980d8f71642fcdc99309c571df3fcf3328
Fixed in
  • 16032c980d8f71642fcdc99309c571df3fcf3328
LinuxLinuxAffected
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < 7021acc84c2e0add77a1a33152e3a1e428fdbfdb
Fixed in
  • 7021acc84c2e0add77a1a33152e3a1e428fdbfdb
LinuxLinuxAffected
  • ≥ a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4, < 5469dc4153a60289c5bae00215947c6ce09fcc0e
Fixed in
  • 5469dc4153a60289c5bae00215947c6ce09fcc0e

Description

CVE-2026-98753 is a published vulnerability related to the tty subsystem in Microsoft software, specifically involving the restoration of TTY_IO_ERROR on activation failure. The advisory does not provide detailed technical information or impact specifics. Affected versions are exactly 3.0 and 4.0. No CVSS score or exploit information is available.

References

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