High severity · published Jan 21, 2026
CVE-2021-47859
ActivIdentity 8.2 - 'ac.sharedstore' Unquoted Service Path
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
ActivIdentity 8.2 contains an unquoted service path vulnerability in the ac.sharedstore service that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted binary path in C:\Program Files\Common Files\ActivIdentity\ 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 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
ActivIdentity · HID Global
8.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47859
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47859
www.exploit-db.com
https://www.exploit-db.com/exploits/49703
www.hidglobal.com
https://www.hidglobal.com/
www.vulncheck.com
https://www.vulncheck.com/advisories/actividentity-acsharedstore-unquoted-service-path