Synology DSM/DS3622xs+/FS3410/HD6500 prior 7.1.1-42962-2 Session race condition

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical was found in Synology DSM, DS3622xs+, FS3410 and HD6500. Affected by this vulnerability is some unknown functionality of the component Session Handler. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability regarding concurrent execution using shared resource with improper synchronization ('Race Condition') is found in the session processing functionality of Out-of-Band (OOB) Management. This allows remote attackers to execute arbitrary commands via unspecified vectors. The following models with Synology DiskStation Manager (DSM) versions before 7.1.1-42962-2 may be affected: DS3622xs+, FS3410, and HD6500.

The weakness was presented 10/20/2022 as SA_22_17. It is possible to read the advisory at This vulnerability is known as CVE-2022-27626 since 03/21/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 7.1.1-42962-2 eliminates this vulnerability.

See VDB-211841, VDB-211842 and VDB-211844 for similar entries.





CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 10.0
CNA Vector (Synology Inc.): 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍


Class: Race condition
CWE: CWE-362

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DSM/DS3622xs+/FS3410/HD6500 7.1.1-42962-2


03/21/2022 🔍
10/20/2022 +212 days 🔍
10/20/2022 +0 days 🔍
11/18/2022 +29 days 🔍



Advisory: SA_22_17
Status: Confirmed

CVE: CVE-2022-27626 (🔍)
See also: 🔍


Created: 10/20/2022 01:59 PM
Updated: 11/18/2022 12:54 PM
Changes: 10/20/2022 01:59 PM (49), 11/18/2022 12:54 PM (11)
Complete: 🔍
Cache ID: 44:BE3:40


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