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CVE-2026-99166VulnerabilityPublished

CM event handler · net: rds: fix uninitialized trans dereference

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99166· High

Not known to be exploited · fixed in ca14c289ed9ffed6cc64290d039e923e5720a8bf : patch Microsoft soon.

Data as of 29 Oct 2026, 11:36 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in ca14c289ed9ffed6cc64290d039e923e5720a8bf, 492ba6ac1b1ffb8a06ff52db0825c1af2cdb28c8, 5f23e4e3a31dacfd82a8f56be253adc0910ee84f

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 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 29 Oct 2026.

What to do

Upgrade Linux to ca14c289ed9ffed6cc64290d039e923e5720a8bf, 492ba6ac1b1ffb8a06ff52db0825c1af2cdb28c8 or 5f23e4e3a31dacfd82a8f56be253adc0910ee84f.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ dcdede0406d30e14a6ed727dce69dfac0518371d, < ca14c289ed9ffed6cc64290d039e923e5720a8bf
Fixed in
  • ca14c289ed9ffed6cc64290d039e923e5720a8bf
LinuxLinuxAffected
  • ≥ dcdede0406d30e14a6ed727dce69dfac0518371d, < 492ba6ac1b1ffb8a06ff52db0825c1af2cdb28c8
Fixed in
  • 492ba6ac1b1ffb8a06ff52db0825c1af2cdb28c8
LinuxLinuxAffected
  • ≥ dcdede0406d30e14a6ed727dce69dfac0518371d, < 5f23e4e3a31dacfd82a8f56be253adc0910ee84f
Fixed in
  • 5f23e4e3a31dacfd82a8f56be253adc0910ee84f
LinuxLinuxAffected
  • =4.6
Fixed in–
Red Hatredhat/kernelpkg:rpm/redhat/kernelOther threatsAffected
  • =4.6
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

This vulnerability involves an uninitialized pointer dereference in the Connection Manager (CM) event handler within the RDS component of Microsoft software. The flaw could potentially lead to undefined behavior or system instability. No CVSS score or detailed impact information is provided.

References

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