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CVE-2026-98433VulnerabilityPublished Updated

Microsoft · KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98433· Medium

Not known to be exploited · fixed in fcbff8008b0e08cd53b611bd0ff7e01f5b962f80 : update Microsoft when convenient.

Data as of 28 Oct 2026, 09:27 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in fcbff8008b0e08cd53b611bd0ff7e01f5b962f80, f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b, ed2f2ff63cb7e71204096e765c6d02c3b6974b95 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < fcbff8008b0e08cd53b611bd0ff7e01f5b962f80
Fixed in
  • fcbff8008b0e08cd53b611bd0ff7e01f5b962f80
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b
Fixed in
  • f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < ed2f2ff63cb7e71204096e765c6d02c3b6974b95
Fixed in
  • ed2f2ff63cb7e71204096e765c6d02c3b6974b95
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < dfb84274932737e338ff5eb27f34b4c8ecb01b50
Fixed in
  • dfb84274932737e338ff5eb27f34b4c8ecb01b50
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < c41088b2765af1e97e7bb05f906ae1823eca0388
Fixed in
  • c41088b2765af1e97e7bb05f906ae1823eca0388
LinuxLinuxAffected
  • ≥ ca9f4942670c37407bb109090eaf776ce2ccc54c, < a933d7024359e2e566b07903d1294b84f90482ae
Fixed in
  • a933d7024359e2e566b07903d1294b84f90482ae

Description

A vulnerability identified as CVE-2026-98433 affects Microsoft products version 3.0 and 4.0. It involves a secure device page leak occurring on uv_page_in() failure in the KVM PPC Book3S HV component. No CVSS score or detailed impact information is provided.

References

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