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Recorded 25 Oct 2026 at 01:34 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.

The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.

CVEMicrosoft Security Response Center

ASP.NET Core Tampering Vulnerability

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.

What it said

CVE
CVE-2026-88092
Severity
Important
CVSS base score
9.4
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Impact
Tampering
Exploitation detected
Not reported by MSRC
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Component
ASP.NET Core
Weakness
CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
ASP.NET Core 10.0, ASP.NET Core 11.0, ASP.NET Core 8.0, ASP.NET Core 9.0, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
Updates that fix it
KB5130034: ASP.NET Core 8.0; KB5130035: ASP.NET Core 9.0; KB5130036: ASP.NET Core 10.0
CISA KEV
Not listed in the collected catalog
EPSS
0.8%; scored 24 Oct 2026
Public exploit code
No Nuclei template listed
Published
13 Oct 2026 07:00 UTC
Last revised
13 Oct 2026 07:00 UTC
Revision note
Information published.

Source evidence when recorded

Microsoft security releases
Complete at observationRead 25 Oct 2026 at 01:33 UTC
CISA KEV
Complete at observationRead 25 Oct 2026 at 01:33 UTC
FIRST EPSS
Complete at observationRead 25 Oct 2026 at 01:33 UTC
Public detection templates (Nuclei)
Complete at observationRead 25 Oct 2026 at 01:33 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

  1. Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  2. Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (23)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 25 Oct 2026 · 01:34:18 UTC EPSS0.8%; scored 23 Oct 2026 → 0.8%; scored 24 Oct 2026
  2. 23 Oct 2026 · 15:51:28 UTC EPSS0.8%; scored 22 Oct 2026 → 0.8%; scored 23 Oct 2026
  3. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  4. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  5. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  6. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  7. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  8. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  9. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  10. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  11. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  12. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  13. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  14. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  15. 22 Oct 2026 · 17:33:15 UTC EPSS0.8%; scored 21 Oct 2026 → 0.8%; scored 22 Oct 2026
  16. 21 Oct 2026 · 21:47:24 UTC EPSS0.8%; scored 20 Oct 2026 → 0.8%; scored 21 Oct 2026
  17. 20 Oct 2026 · 20:53:31 UTC EPSS0.8%; scored 19 Oct 2026 → 0.8%; scored 20 Oct 2026
  18. 19 Oct 2026 · 15:12:40 UTC EPSS0.8%; scored 18 Oct 2026 → 0.8%; scored 19 Oct 2026
  19. 18 Oct 2026 · 14:54:30 UTC EPSS0.8%; scored 16 Oct 2026 → 0.8%; scored 18 Oct 2026
  20. 18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
  21. 16 Oct 2026 · 16:13:25 UTC EPSS0.8%; scored 15 Oct 2026 → 0.8%; scored 16 Oct 2026
  22. 15 Oct 2026 · 21:30:54 UTC EPSS0.8%; scored 14 Oct 2026 → 0.8%; scored 15 Oct 2026
  23. 15 Oct 2026 · 01:07:54 UTC EPSSNot scored → 0.8%; scored 14 Oct 2026
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 9 Nov 10:47 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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