CVE detail
CVE-2026-62911
Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 23.0 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 9
- within the 30d window
- Peak daily
- 7
- highest bucket
Evidence
Source links by recency
9 source links · newest first
- August 2026 Patch Tuesday: One Exploited Zero-Day and 62 Critical Vulnerabilities Among 415 CVEsCrowdStrike
affected by August 2026 Patch Tuesday Exploited Zero-Day Vulnerability in Windows Ancillary Function Driver for WinSock CVE-2026-68820 is an Important elevation of privilege vulnerability affecting the Windows Ancillary Function Driver for WinSock and has a CVSS score of 7.0 . A use-after-free flaw (CWE-416) allows a low-privileged local attacker to el
vendorwww.crowdstrike.comAug 12, 2026, 8:00 AM Microsoft Patch Tuesday for August 2026 fixes 398 CVEs, including an actively exploited zero-day and a wormable DNS flaw enabling remote code execution. Microsoft released its Patch Tuesday security updates for August 2026 on Tuesday, covering 398 new CVEs across Windows, Office, Azure, Exchange Server, SharePoint, Teams, GitHub Copilot, .NET, and a range of other […]
newssecurityaffairs.comAug 12, 2026, 6:49 AMarked as "critical." Microsoft notes that 1 of the vulnerabilities disclosed this month have been exploited in the wild CVE-2026-68820 is an elevation of privilege vulnerability affecting Windows Ancillary Function Driver for WinSock. A Use After Free vulnerability could allow an authorized attacker to elevate privileges locally. This vulnerability has
vendorblog.talosintelligence.comAug 11, 2026, 10:21 PMation denial-of-service, and arbitrary code execution. Zero-day Vulnerabilities Patched in August Patch Tuesday Edition CVE-2026-72971: Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability This is a link-following flaw that may allow an authenticated attacker to perform local tampering. CVE-2026-62832: Windows User Profile
vendorblog.qualys.comAug 11, 2026, 9:55 PM- 421 bugs in Microsoft's Patch Tuesday release, and the Norks have already attacked oneThe Register Security
(and possibly other miscreants) found and attacked one of these flaws as a zero-day in early June. The bug, tracked as CVE-2026-68820, is a use-after-free in the Windows Ancillary Function Driver for WinSock. “A locally authenticated attacker could run a specially crafted application on an affected system to trigger a race condition,” Redmond warned,
newswww.theregister.comAug 11, 2026, 9:31 PM ktop browser security patches so far this month. SharePoint: critical RCE chain by Rapid7 Today sees the publication of CVE-2026-63520 , a high-severity remote code execution in Microsoft SharePoint. Discovered by Rapid7 Senior Principal Security Researcher Stephen Fewer , and published today in coordination with Microsoft; this vulnerability is the se
vendorwww.rapid7.comAug 11, 2026, 9:10 PMcluding a high-severity vulnerability that has been exploited in the wild as a zero-day. The exploited flaw, tracked as CVE-2026-68820, is described as a use-after-free issue in Ancillary Function Driver for WinSock (afd.sys), the kernel-mode driver functioning as the backbone for the Windows Sockets API. Microsoft says threat actors have been exploiti
newswww.securityweek.comAug 11, 2026, 6:46 PM- The August 2026 Security Update ReviewZero Day Initiative
g actively exploited, at least as 0-days. Again, we’ll start with the bug under active attack and move on from there. - CVE-2026-68820 - Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability This bug allows attackers to execute code at SYSTEM level. Bugs of this type are often paired with code execution bugs to take over a
vendorwww.thezdi.comAug 11, 2026, 5:56 PM Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
vendormsrc.microsoft.comAug 11, 2026, 2:00 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2002-0054CVSS 7.5 · High
SMTP service in (1) Microsoft Windows 2000 and (2) Internet Mail Connector (IMC) in Exchange Server 5.5 does not properly handle responses to NTLM authentication, which allows rem…
- CVE-2026-62914CVSS 7.3 · High
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
- CVE-2026-62912CVSS 6.5 · Medium
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
- CVE-2026-55009CVSS 7.8 · High
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
- CVE-2026-55008CVSS 9.6 · Critical
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a networ…
- CVE-2026-55006CVSS 7.8 · High
Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.