EUVD-2026-73935
GHSA-hwrf-3w89-xf2g
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Network-delivered DoS requiring low-privilege credentials (PR:L); no confidentiality or integrity impact per description and CVSS C:N/I:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
6DescriptionCVE.org
Out-of-bounds read in Skype for Business allows an authorized attacker to deny service over a network.
AnalysisAI
Out-of-bounds read in Skype for Business Server enables authenticated network attackers to crash the service, causing a denial of service. Affected are on-premises deployments of Skype for Business Server 2015, 2019, and the Subscription Edition - all unpatched below the versions specified in Microsoft's July 2026 advisory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid network credentials: the CVSS PR:L metric confirms at minimum a low-privileged authenticated account is needed to reach the vulnerable code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) reflects a network-reachable, low-complexity, authenticated DoS with no confidentiality or integrity impact, yielding a moderate 6.5 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released cumulative updates that address this flaw: upgrade Skype for Business Server 2015 to 6.0.9319.885 or later, Skype for Business Server 2019 to 7.0.2046.569 or later, and Skype for Business Server Subscription Edition to 7.0.2046.879 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Denial Of Service
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External POC / Exploit Code
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