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CVE-2026-99165VulnerabilityPublished

Microsoft · sctp: revalidate output stream after association connect wait

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99165· High

Not known to be exploited · fixed in fd56ac95ec31a05b66e8938debfa847f49c0e993 : patch Microsoft soon.

Data as of 29 Oct 2026, 11:47 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fd56ac95ec31a05b66e8938debfa847f49c0e993, b7ad72414c673ce1fa1f463e807cd4f34f8be9bf, 77a63d1b813b08c4e5a948f5e04fbaca6176aa8f

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 fd56ac95ec31a05b66e8938debfa847f49c0e993, b7ad72414c673ce1fa1f463e807cd4f34f8be9bf or 77a63d1b813b08c4e5a948f5e04fbaca6176aa8f.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 668c9beb9020d5834ee9e43c208190a07d2b1928, < fd56ac95ec31a05b66e8938debfa847f49c0e993
Fixed in
  • fd56ac95ec31a05b66e8938debfa847f49c0e993
LinuxLinuxAffected
  • ≥ 668c9beb9020d5834ee9e43c208190a07d2b1928, < b7ad72414c673ce1fa1f463e807cd4f34f8be9bf
Fixed in
  • b7ad72414c673ce1fa1f463e807cd4f34f8be9bf
LinuxLinuxAffected
  • ≥ 668c9beb9020d5834ee9e43c208190a07d2b1928, < 77a63d1b813b08c4e5a948f5e04fbaca6176aa8f
Fixed in
  • 77a63d1b813b08c4e5a948f5e04fbaca6176aa8f
LinuxLinuxAffected
  • =4.16
Fixed in–
Debiandebian/linuxpkg:deb/debian/linuxOther threatsAffected
  • =4.16
Fixed in–

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

Description

A vulnerability identified as CVE-2026-99165 affects Microsoft software version 3.0 related to SCTP (Stream Control Transmission Protocol) output stream revalidation after association connect wait. No detailed technical or impact information is provided beyond the identification and affected version.

References

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