Vulnerability Details : CVE-2021-26566
Potential exploit
Insertion of sensitive information into sent data vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary commands via inbound QuickConnect traffic.
Products affected by CVE-2021-26566
- cpe:2.3:o:synology:vs960hd_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*
- cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:synology:diskstation_manager_unified_controller:3.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-26566
0.44%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-26566
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
9.0
|
CRITICAL | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
2.2
|
6.0
|
NIST | |
|
8.3
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
1.6
|
6.0
|
Synology Inc. |
CWE ids for CVE-2021-26566
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
-
The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.Assigned by: security@synology.com (Secondary)
References for CVE-2021-26566
-
https://www.synology.com/security/advisory/Synology_SA_20_26
Synology Inc.Vendor Advisory
-
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1160
TALOS-2020-1160 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Third Party Advisory
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