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High severity · published Jan 15, 2026
CVE-2021-47807
Sync Breeze 13.6.18 - 'Multiple' Unquoted Service Path
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
Sync Breeze 13.6.18 contains an unquoted service path vulnerability in its Windows service configuration that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted path in service binaries located in 'Program Files' directories to inject malicious executables and escalate privileges.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SB
Sync Breeze · Syncbreeze
13.6.18 · source: vendor, NVD
Affected product
SB
Sync Breeze
Syncbreeze
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47807
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47807
Exploit
https://www.exploit-db.com/exploits/50023
Product
https://www.syncbreeze.com/
Third Party Advisory
https://www.vulncheck.com/advisories/sync-breeze-multiple-unquoted-service-path