VulnSocial

CVE-2026-66306Disclosure(microsoft / skype_for_business_server)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft skype_for_business_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.

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0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-209

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • skype_for_business_server
  • skype_for_business_server_subscription_edition

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
skype_for_business_serverskype_for_business_server_subscription_edition

3 versions affected across 2 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-09: 1Patch / Workaround · 2026-09-09: 1Technical Details · 2026-09-09: 109-09
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Disclosure

    🔐 Skype for Business is still around—and now it can leak credentials via error messages. Patch the on-prem server, because this isn’t a client update; it’s legacy software asking for attention. https://windowsforum.com/news/cve-2026-66306-skype-for-business-information-disclosure-vulnerability.444169/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftSecurity #Msrc #Cve202666306 https://t.co/HLaRCT6AvV

    Post summary

    The post announces CVE‑2026‑66306 in Skype for Business, warns of credential leakage through error messages, and urges users to patch the on‑prem server.

    00000118
    1.4K followersView on X
CPE platform detail6 entries

6 of 6 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftskype_for_business_server2015--
Appmicrosoftskype_for_business_server2015--
Appmicrosoftskype_for_business_server2019--
Appmicrosoftskype_for_business_server2019--
Appmicrosoftskype_for_business_server2019--
Appmicrosoftskype_for_business_server_subscription_edition7.0.2046.849--

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