Microsoft · writeback: bound cleanup_offline_cgwb() rescans by rotating scanned inodes
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in f6988c90671e83db79df1b7b9d6fdb0e5947fd84 : update Microsoft when convenient.
Data as of 2 Nov 2026, 10:58 UTC
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
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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.