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CVE-2026-98888VulnerabilityPublished Updated

Microsoft · arm64: kprobes: Allow reentering kprobes while single-stepping

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98888· Medium

Not known to be exploited · fixed in f96a0606de6bcc8d937b80e6470fd7a174c17e26 : 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

Thin evidence

One scorer or none
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in f96a0606de6bcc8d937b80e6470fd7a174c17e26, c8e84e292ed4cfc199824146da71bb4397b02a1f, bb0fe9121aa0824211aafa33c7d0151fd25ddb75 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 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
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < f96a0606de6bcc8d937b80e6470fd7a174c17e26
Fixed in
  • f96a0606de6bcc8d937b80e6470fd7a174c17e26
LinuxLinuxAffected
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < c8e84e292ed4cfc199824146da71bb4397b02a1f
Fixed in
  • c8e84e292ed4cfc199824146da71bb4397b02a1f
LinuxLinuxAffected
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < bb0fe9121aa0824211aafa33c7d0151fd25ddb75
Fixed in
  • bb0fe9121aa0824211aafa33c7d0151fd25ddb75
LinuxLinuxAffected
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < a21bf9cb893126e8d9730995708d0be5eb167652
Fixed in
  • a21bf9cb893126e8d9730995708d0be5eb167652
LinuxLinuxAffected
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < 68774caca799e9695db56d426c69acebd041c2ed
Fixed in
  • 68774caca799e9695db56d426c69acebd041c2ed
LinuxLinuxAffected
  • ≥ 2dd0e8d2d2a157dbc83295a78336c2217110f2f8, < 23f851ac0078a908bf3422d6467ebc1db5828c46
Fixed in
  • 23f851ac0078a908bf3422d6467ebc1db5828c46

Description

This vulnerability involves the arm64 architecture's kprobes feature, specifically allowing reentering kprobes while single-stepping. The advisory references Microsoft's support lifecycle but does not provide detailed technical or impact information.

References

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