4.3
MediumCVSS 4.0 · from hackerone
CVE-2025-64394
A vulnerability allowing a low-privileged local user to write arbitrary files with SYSTEM privileges during the installation of Veeam Backup for Microsoft 365, which can lead to privilege escalation…
Backup for Microsoft 365 · CWE-1386 · CWE-1386AffectedBackup for Microsoft 365
FixNo fix listed yet.
PublishedOct 27, 16:16 · hackerone
ScoredOct 27 · 4.3 · hackerone
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:09 UTC
What we know
No known exploitation. CISA KEV, checked 22:09 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker needs local access to the machine. CVSS: local.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
Someone has to open, click or run something first. CVSS: user interaction required.
A successful attack can take the service down. CVSS impact.
Description
A vulnerability allowing a low-privileged local user to write arbitrary files with SYSTEM privileges during the installation of Veeam Backup for Microsoft 365, which can lead to privilege escalation or denial of service.
From hackerone
Affected and fixed versions
ProductAffectedFixed inBackup for Microsoft 3658.0 – 8.6.0.1102–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known