ChangeIntel IT change radar
Public mode

No access to your tenant or devices. Every item links to its source. What this means

Some sources, documents or advisories need attention: 275/275 feeds/APIs · 469/469 docs · 8/9 advisories · checked 14:06 UTC Customize Public modeDiscuss ChangeIntel on Discord

Recorded 19 Oct 2026 at 15:12 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

Skype for Business Remote Code Execution Vulnerability

External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.

What it said

CVE
CVE-2026-66302
Severity
Critical
CVSS base score
9.8
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact
Remote Code Execution
Exploitation detected
Not reported by MSRC
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Component
Skype for Business
Weakness
CWE-73: External Control of File Name or Path
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
Skype for Business Server 2015 CU13, Skype for Business Server 2019 CU8, Skype for Business Server Subscription Edition CU1
Updates that fix it
KB5123287: Skype for Business Server Subscription Edition CU1; KB5123300: Skype for Business Server 2019 CU8; KB5123301: Skype for Business Server 2015 CU13
CISA KEV
Not listed in the collected catalog
EPSS
1.0%; scored 19 Oct 2026
Public exploit code
No Nuclei template listed
Published
8 Sep 2026 07:00 UTC
Last revised
8 Sep 2026 07:00 UTC
Revision note
Information published.

Source evidence when recorded

Microsoft security releases
Complete at observationRead 19 Oct 2026 at 15:11 UTC
CISA KEV
Complete at observationRead 19 Oct 2026 at 15:11 UTC
FIRST EPSS
Complete at observationRead 19 Oct 2026 at 15:11 UTC
Public detection templates (Nuclei)
Complete at observationRead 19 Oct 2026 at 15:11 UTC

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

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 (7)

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

  1. 19 Oct 2026 · 15:12:40 UTC EPSS1.0%; scored 18 Oct 2026 → 1.0%; scored 19 Oct 2026
  2. 18 Oct 2026 · 14:54:30 UTC EPSS1.0%; scored 16 Oct 2026 → 1.0%; scored 18 Oct 2026
  3. 18 Oct 2026 · 14:54:30 UTC Link: September 2026/security?release=2026-Sep#cves
  4. 16 Oct 2026 · 16:13:25 UTC EPSS1.0%; scored 15 Oct 2026 → 1.0%; scored 16 Oct 2026
  5. 15 Oct 2026 · 21:30:54 UTC EPSS1.0%; scored 14 Oct 2026 → 1.0%; scored 15 Oct 2026
  6. 15 Oct 2026 · 01:07:54 UTC EPSS1.0%; scored 13 Oct 2026 → 1.0%; scored 14 Oct 2026
  7. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
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 1 Nov 14:06 UTC · 275 of 275 readable · 271 fully read · documentation 469/469 current

No accounts or analytics; your preferences stay in your browser. Information, not advice. ChangeIntel is an independent tool and is not affiliated with or endorsed by Microsoft, Apple, Google, Broadcom (VMware), Jamf, Oracle, Mozilla, or any other vendor it covers. Product names are trademarks of their owners. Built by Evotec.