Vulnerability Report

CVE-2021-26561

RCE

Title: Stack-based buffer overflow in synoagentregisterd

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2021-26561.

CWE Category CWE-119
Published Date Feb 26, 2021
Modified Date Jan 14, 2025
Exploit Status Not Found
Score 9.0 CVSS v3.1
Exploit Probability (EPSS)
1.86%

Vulnerability Summary

CVE-2021-26561: Stack-based buffer overflow vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.

Impacted Vendors

S
synology 3

Reference Links

https://www.synology.com/security/advisory/Synology_SA_20_26 https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159 https://www.synology.com/security/advisory/Synology_SA_20_26 https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.0
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.1
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
6.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-26561 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.