Microsoft fixes "BadSuccessor" Kerberos vulnerability (CVE-2025-53779)
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-49712 | Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network | 8.8 | 20% | ||
CVE-2025-53731+1 related CVE | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 | <1% | ||
| CVE-2025-53766 | Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network | 9.8 | 7% | ||
| CVE-2025-53770 | Unauthenticated Deserialization RCE in Microsoft SharePoint Server on-premises | 9.8 | 100% | KEVRansomwarePoC ×3 | KEV |
| CVE-2025-53771 | Improper Authentication in Microsoft SharePoint Server Enables Network Spoofing | 6.5 | 100% | ||
| CVE-2025-53778 | Improper Authentication in Microsoft Windows NTLM Enables Privilege Escalation | 8.8 | 39% | ||
| CVE-2025-53779 | Relative path traversal in Windows Kerberos allows an authorized attacker to elevate privileges over a network | 7.2 | 3% | ||
| CVE-2025-53786 | On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix | 8.0 | 7% |
From the original article
4 min read at helpnetsecurity.com
For August 2025 Patch Tuesday, Microsoft has released security updates resolving 100+ security vulnerabilities in its various solutions, including a relative path traversal flaw in Windows Kerberos ( CVE-2025-53779 ) that allows an authorized attacker to elevate privileges over a network as part of a BadSuccessor attack.
By @zeljkazorz · helpnetsecurity.com
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