VulnSocial

CVE-2026-66304Patch(microsoft / skype_for_business_server)

LOWCVSS 7.5 · HIGH

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

Server-side request forgery (ssrf) 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-918

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
  • 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
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    🔒 Skype for Business gets another security reminder: “retired” doesn’t mean “safe to ignore.” On-prem servers still need patching—because legacy software never misses a chance to haunt IT. https://windowsforum.com/news/cve-2026-66304-skype-for-business-information-disclosure-vulnerability.444165/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftSecurity #Msrc #Cve202666304 https://t.co/fIYl2S3lCD

    Post summary

    The tweet alerts that Skype for Business CVE-2026-66304 is an information‑disclosure flaw and urges on‑premises servers to apply patches, but does not discuss POCs, exploits, or active attacks.

    0000064
    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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