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CVE-2026-118147ImportantSpoofingNetwork

Visual Studio Spoofing Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.

Severity
Important
CVSS base score
7.4
Impact
Spoofing
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
No (MSRC assessment)
EPSS · 30-day forecast
0.6%FIRST forecast dated 10 Nov 2026, for the following 30 days · FIRST percentile 49.6% · about EPSS
Customer action
Required: follow the MSRC remediation guidance
More details
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
Public detection template
No Nuclei template is listed in the current collected catalog
Component
Visual Studio
Weakness
CWE-295: Improper Certificate Validation
Issued by
Microsoft
Published
30 Oct 2026 · October 2026
Last revised
30 Oct 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
HighAC:H
Privileges required
NonePR:N
User interaction
NoneUI:N
Scope
UnchangedS:U
Confidentiality
HighC:H
Integrity
HighI:H
Availability
NoneA:N

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Developer Tools
4 affected products
  • Microsoft Visual Studio 2017 version 15.9
  • Microsoft Visual Studio 2019 version 16.11
  • Microsoft Visual Studio 2022 version 17.14
  • Microsoft Visual Studio 2026 version 18.11

What changed

  1. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  2. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  3. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  4. Detection template: No Nuclei template listed → Unknown: detection-template 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 (27)

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

  1. 10 Nov 2026 · 18:32:11 UTC EPSS0.6%; scored 9 Nov 2026 → 0.6%; scored 10 Nov 2026
  2. 9 Nov 2026 · 22:24:37 UTC EPSS0.6%; scored 8 Nov 2026 → 0.6%; scored 9 Nov 2026
  3. 8 Nov 2026 · 15:16:05 UTC EPSS0.6%; scored 7 Nov 2026 → 0.6%; scored 8 Nov 2026
  4. 7 Nov 2026 · 16:12:44 UTC EPSS0.6%; scored 6 Nov 2026 → 0.6%; scored 7 Nov 2026
  5. 6 Nov 2026 · 19:15:37 UTC EPSS0.6%; scored 5 Nov 2026 → 0.6%; scored 6 Nov 2026
  6. 6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  7. 6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
  8. 6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
  9. 6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
  10. 6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  11. 6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  12. 6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
  13. 6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  14. 5 Nov 2026 · 23:42:03 UTC EPSS0.6%; scored 4 Nov 2026 → 0.6%; scored 5 Nov 2026
  15. 5 Nov 2026 · 02:36:20 UTC EPSS0.6%; scored 3 Nov 2026 → 0.6%; scored 4 Nov 2026
  16. 4 Nov 2026 · 03:04:37 UTC EPSS0.6%; scored 2 Nov 2026 → 0.6%; scored 3 Nov 2026
  17. 3 Nov 2026 · 01:53:36 UTC EPSS0.6%; scored 1 Nov 2026 → 0.6%; scored 2 Nov 2026
  18. 2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  19. 2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
  20. 2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
  21. 2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
  22. 2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  23. 2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  24. 2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
  25. 2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  26. 2 Nov 2026 · 00:36:51 UTC EPSSNo EPSS score collected → 0.6%; scored 1 Nov 2026
  27. 31 Oct 2026 · 18:22:15 UTC Issued byNot stated → Microsoft

Explore global source statements, affected packages and advisory history for CVE-2026-118147. The catalog has a separate collection scope from Microsoft release records.

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-118147

Published

Visual Studio Spoofing Vulnerability

Improper certificate validation in Visual Studio allows an unauthorized attacker to perform spoofing over a network.

Source published
31 Oct 2026 18:13:37 UTC
Source modified
10 Nov 2026 20:47:23 UTC
Observed here
10 Nov 2026 22:21:22 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

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 11 Nov 20:03 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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