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CVE-2026-98476VulnerabilityPublished Updated

ccw_device_get_util_str() · s390/cio: Fix NULL pointer dereference

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98476· Medium

Not known to be exploited · fixed in dbf30e661ceb9a52c94c85719716391dcc29142a : 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
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in dbf30e661ceb9a52c94c85719716391dcc29142a, c3bbcb32deecc06ebb1762398399b566d5ff2fc9, 44b16b02608058fc72198ac0205969f0f43065df +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 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < dbf30e661ceb9a52c94c85719716391dcc29142a
Fixed in
  • dbf30e661ceb9a52c94c85719716391dcc29142a
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < c3bbcb32deecc06ebb1762398399b566d5ff2fc9
Fixed in
  • c3bbcb32deecc06ebb1762398399b566d5ff2fc9
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < 44b16b02608058fc72198ac0205969f0f43065df
Fixed in
  • 44b16b02608058fc72198ac0205969f0f43065df
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < 27e396a89f76f742abdbe9f8c4a58a6e806fdf59
Fixed in
  • 27e396a89f76f742abdbe9f8c4a58a6e806fdf59
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < 9d8b21820caed9128945fffcedf03e2a4c21eee2
Fixed in
  • 9d8b21820caed9128945fffcedf03e2a4c21eee2
LinuxLinuxAffected
  • ≥ 199652309a4d6635fca19d7528d73ab9e219bd9a, < 5fc54e04dad90b15d0430118b3f288a1d64e66c9
Fixed in
  • 5fc54e04dad90b15d0430118b3f288a1d64e66c9

Description

A vulnerability identified as CVE-2026-98476 affects Microsoft products, specifically versions 3.0 and 4.0. It involves a NULL pointer dereference in the s390/cio component's ccw_device_get_util_str() function. No CVSS score or detailed impact information is provided.

References

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