Skip to main content
CVE-2026-98538VulnerabilityPublished Updated

Microsoft · writeback: bound cleanup_offline_cgwb() rescans by rotating scanned inodes

Affects MicrosoftSource GCVE Database

0
Compare
Authoritative record:CVE-2026-98538· Medium

Not known to be exploited · fixed in f6988c90671e83db79df1b7b9d6fdb0e5947fd84 : update Microsoft when convenient.

Data as of 2 Nov 2026, 10:58 UTC

Severity
Medium

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 f6988c90671e83db79df1b7b9d6fdb0e5947fd84, dd4b92067238771b604b59fdda8efed6d70ee823, c96b4d1628868e1195da1a896f79e06f350a3187 +3

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, < f6988c90671e83db79df1b7b9d6fdb0e5947fd84
Fixed in
  • f6988c90671e83db79df1b7b9d6fdb0e5947fd84
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < dd4b92067238771b604b59fdda8efed6d70ee823
Fixed in
  • dd4b92067238771b604b59fdda8efed6d70ee823
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < c96b4d1628868e1195da1a896f79e06f350a3187
Fixed in
  • c96b4d1628868e1195da1a896f79e06f350a3187
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 624dd0931162523d70f9db8c120b5ec6429a9b97
Fixed in
  • 624dd0931162523d70f9db8c120b5ec6429a9b97
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 9dac137bf77e0683778fb34c86e730c6129e8cb6
Fixed in
  • 9dac137bf77e0683778fb34c86e730c6129e8cb6
LinuxLinuxAffected
  • ≥ c22d70a162d3cc177282c4487be4d54876ca55c8, < 2d1da58c79b66646721a644c6eb4dd1f9c5c9327
Fixed in
  • 2d1da58c79b66646721a644c6eb4dd1f9c5c9327

Description

CVE-2026-98538 is a published vulnerability affecting Microsoft products versions 3.0 and 4.0. The issue involves the writeback process where the function cleanup_offline_cgwb() rescans by rotating scanned inodes. No CVSS score or detailed impact information is provided.

References

Community reviews

Loading reviews…