CVE-2026-66308
Skype for Business and Lync Denial of Service Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.0.9319.885, 7.0.2046.569, 7.0.2046.879
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Out-of-bounds read in Skype for Business allows an authorized attacker to deny service over a network.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Microsoft Skype for Business Server 2015 CU13
From 9319.0 · fixed in 6.0.9319.885
- Microsoft Skype for Business Server 2019 CU8
From 2046.0 · fixed in 7.0.2046.569
- Microsoft Skype for Business Server Subscription Edition CU1
From 2046.0 · fixed in 7.0.2046.879