High
Skype for Business Spoofing Vulnerability
Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.
Announced Group revision 1
Original source ↗CVE-2026-69646
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-69646
Skype for Business Server 2015 CU13
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Skype for Business Server 2019 CU8
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Skype for Business Server Subscription Edition CU1
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Microsoft",
"product": "Skype for Business Server 2015 CU13",
"versions": [
{
"status": "affected",
"version": "9319.0",
"lessThan": "6.0.9319.885",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Skype for Business Server 2019 CU8",
"versions": [
{
"status": "affected",
"version": "2046.0",
"lessThan": "7.0.2046.569",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
},
{
"vendor": "Microsoft",
"product": "Skype for Business Server Subscription Edition CU1",
"versions": [
{
"status": "affected",
"version": "2046.0",
"lessThan": "7.0.2046.879",
"versionType": "custom"
}
],
"platforms": [
"x64-based Systems"
]
}
]- Related CVEs
- CVE-2026-69646
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #25272 · Revision 1
- Added to Heist Feed
- Publisher date