Critical severity · published Mar 12, 2021
CVE-2021-27646
Use After Free vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted…
9.8
CVSS
3.9%
EPSS
No
On KEV
Description
Use After Free vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DM
Diskstation Manager · Synology
before 6.2.3-25426-3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27646
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27646
Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_20_26
Not Applicable
https://www.zerodayinitiative.com/advisories/ZDI-21-339/
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-340/
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