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CVE-2026-98610VulnerabilityPublished Updated

Microsoft · net/sched: sch_hfsc: bound the classify inner-filter walk with a drift budget

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98610· High

Not known to be exploited · fixed in f476fb656ca2326d7b2eba98d03ced1cbcf5cd99 : patch Microsoft soon.

Data as of 2 Nov 2026, 08:45 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in f476fb656ca2326d7b2eba98d03ced1cbcf5cd99, e8f9979286f70dfbfe0552e2a63000950841bea6, d4fd251e3311727c32af89344d3332f788c153a2 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 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 1 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < f476fb656ca2326d7b2eba98d03ced1cbcf5cd99
Fixed in
  • f476fb656ca2326d7b2eba98d03ced1cbcf5cd99
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < e8f9979286f70dfbfe0552e2a63000950841bea6
Fixed in
  • e8f9979286f70dfbfe0552e2a63000950841bea6
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < d4fd251e3311727c32af89344d3332f788c153a2
Fixed in
  • d4fd251e3311727c32af89344d3332f788c153a2
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < 1301a1292c6742b4c96a18715d49f89c3caca0d7
Fixed in
  • 1301a1292c6742b4c96a18715d49f89c3caca0d7
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < 30d7fea767e830bd81ac2f73d2e33c877cb2e679
Fixed in
  • 30d7fea767e830bd81ac2f73d2e33c877cb2e679
LinuxLinuxAffected
  • ≥ a2f79227138c71e08627af5f8961197364edbc98, < 8a60ade2277e1f0e0d0578d565354e52292fa46d
Fixed in
  • 8a60ade2277e1f0e0d0578d565354e52292fa46d

Description

This vulnerability, identified as CVE-2026-98610, relates to the net/sched component's sch_hfsc classifier in Microsoft software versions 3.0 and 4.0. The issue involves bounding the classify inner-filter walk with a drift budget. No further technical details or impact descriptions are provided.

References

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