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CVE-2026-98536VulnerabilityPublished Updated

Microsoft · writeback: report a Tasks-RCU quiescent state per cgwb drain pass

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98536· High

Not known to be exploited · fixed in fd3bf32279df98751364b3609eb100a3e42f253b : patch Microsoft soon.

Data as of 2 Nov 2026, 10:58 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in fd3bf32279df98751364b3609eb100a3e42f253b, ebf1555ad2821be06f87a88ffd9a2cab8d2200e1, 863049b4018237d1590cd13b16e9fe9c0faad2c6 +4

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 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < fd3bf32279df98751364b3609eb100a3e42f253b
Fixed in
  • fd3bf32279df98751364b3609eb100a3e42f253b
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < ebf1555ad2821be06f87a88ffd9a2cab8d2200e1
Fixed in
  • ebf1555ad2821be06f87a88ffd9a2cab8d2200e1
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 863049b4018237d1590cd13b16e9fe9c0faad2c6
Fixed in
  • 863049b4018237d1590cd13b16e9fe9c0faad2c6
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 42462b5bb0dec57db7f85d0f77655c737d45754d
Fixed in
  • 42462b5bb0dec57db7f85d0f77655c737d45754d
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 407a5d205179a4ab186571b0e16ec42725dc77bc
Fixed in
  • 407a5d205179a4ab186571b0e16ec42725dc77bc
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 260f586a80e7f624dd7f069898a75a904f34d373
Fixed in
  • 260f586a80e7f624dd7f069898a75a904f34d373

Description

CVE-2026-98536 is a reported vulnerability related to Microsoft software versions 3.0 and 4.0. The provided information is minimal and does not describe the nature of the vulnerability, its impact, or exploitation details. No CVSS score or detailed technical data is available.

References

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