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CVE-2026-99039VulnerabilityPublished Updated

Microsoft · memstick: core: wait for request completion before freeing card

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99039· High

Not known to be exploited · fixed in f2795c50144d528dabc2cf2fd53c0f0c63a823a1 : patch Microsoft soon.

Data as of 7 Nov 2026, 12:35 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in f2795c50144d528dabc2cf2fd53c0f0c63a823a1, c3ab92542475d59ae685cbb294e70ca4d0ba38e9, b90f33ad9179c69658342323382bfed158f88cb9 +5

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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < f2795c50144d528dabc2cf2fd53c0f0c63a823a1
Fixed in
  • f2795c50144d528dabc2cf2fd53c0f0c63a823a1
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < c3ab92542475d59ae685cbb294e70ca4d0ba38e9
Fixed in
  • c3ab92542475d59ae685cbb294e70ca4d0ba38e9
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < b90f33ad9179c69658342323382bfed158f88cb9
Fixed in
  • b90f33ad9179c69658342323382bfed158f88cb9
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < aa0a37b5024d921e96ac4f8f487c8bfbf1f1a582
Fixed in
  • aa0a37b5024d921e96ac4f8f487c8bfbf1f1a582
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < a2f1aa3341f185ca52103dc4908647570b208855
Fixed in
  • a2f1aa3341f185ca52103dc4908647570b208855
LinuxLinuxAffected
  • ≥ baf8532a147d5b76681ce040e2c8f25a3f0e718d, < 810580cf60edc75c9891c2de3225e4cda78e4d9f
Fixed in
  • 810580cf60edc75c9891c2de3225e4cda78e4d9f

Description

This vulnerability, identified as CVE-2026-99039, relates to the memstick core component where a request completion is not properly awaited before freeing the card. It affects Microsoft products version 3.0 and 4.0. No CVSS score or detailed impact information is provided.

References

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