CVE-2025-43376Network attack vector

DNS query disclosure via privacy-proxy state mishandling

Published Nov 4, 2025 · Updated Nov 4, 2025

Information disclosure in WebKit in Safari, iOS, iPadOS, tvOS, visionOS, and watchOS before 26 allows remote attackers to view DNS queries. WebKit mishandles privacy-proxy state, causing some DNS lookups to bypass Private Relay; Apple has not disclosed the affected function or triggering request sequence. Exposure requires Private Relay to be enabled and reveals queried domain names, without reported data modification or service interruption.

CVSS severity7.5
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in WebKit in Safari, iOS, iPadOS, tvOS, visionOS, and watchOS before 26 allows remote attackers to view DNS queries. WebKit mishandles privacy-proxy state, causing some DNS lookups to bypass Private Relay; Apple has not disclosed the affected function or triggering request sequence. Exposure requires Private Relay to be enabled and reveals queried domain names, without reported data modification or service interruption.

The record

CVE
CVE-2025-43376
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <26
Apple · visionOSversion=unspecified <26
Apple · Safariversion=unspecified <26
Apple · tvOSversion=unspecified <26
Apple · watchOSversion=unspecified <26

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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