CVE-2023-2754

Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client

MEDIUM
6.8
CVSS Score
Published: August 3, 2023 at 01:53 PM UTC
Updated: June 17, 2026 at 05:53 AM UTC
1 product affected across 1 vendorWARP

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses but Unique Local Addresses, which under certain conditions could point towards unknown devices in the same local network which enables an Attacker to view DNS queries made by the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2023.7.160.0
Affected range stops below 2023.7.160.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-319

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