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CVE-2023-41173

HIGH CVSS 3.1: 7.5 EPSS 0.27%
Updated Jan 14, 2026
Adguard
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions before 2.2
Fixed In 2.2
Type CWE-400 (Uncontrolled Resource Consumption)
Vendor Adguard
Public PoC No

AdGuard DNS before 2.2 allows remote attackers to cause a denial of service via malformed UDP packets.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Adguard Adguard_Dns
cpe:2.3:a:adguard:adguard_dns:*:*:*:*:*:*:*:*
2.2

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