CVE-2025-43376VulnerabilityPublished 4 Nov 2025Updated 2 Apr 2026

CVE-2025-43376: Apple Safari · A remote attacker may be able to view leaked DNS queries with Private Relay turned on

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.8% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Apple Safari	Affected =0	Fixed in–

AI-suggested

To mitigate CVE-2025-43376, organizations and users should promptly update all affected Apple devices to the patched versions: Safari 26, iOS 18.7.7 and iPadOS 18.7.7, macOS Tahoe 26, tvOS 26, visionOS 26, and watchOS 26. It is critical to enforce update policies that ensure timely deployment of these patches across all managed devices. Network administrators should monitor DNS traffic for unusual patterns that may indicate exploitation attempts. Where feasible, consider additional DNS privacy measures such as DNS over HTTPS (DoH) or DNS over TLS (DoT) as complementary protections. For high-security environments, temporarily disabling Private Relay until patches are applied may be warranted. Security teams should also educate users about the importance of applying updates and the risks of using unpatched software. Finally, organizations should review their threat detection capabilities to identify potential reconnaissance activities targeting DNS traffic on Apple devices.

Description

A logic issue was addressed with improved state management. This issue is fixed in Safari 26, iOS 18.7.7 and iPadOS 18.7.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. A remote attacker may be able to view leaked DNS queries with Private Relay turned on.

Impact

The primary impact of CVE-2025-43376 is the compromise of user privacy through the leakage of DNS queries that are supposed to be protected by Apple’s Private Relay. DNS queries can reveal detailed information about user browsing behavior, visited websites, and potentially sensitive or confidential activities. For organizations, this leakage could expose employee browsing patterns, internal resource access attempts, or other sensitive operational details. Since the vulnerability can be exploited remotely without authentication or user interaction, attackers can surveil users on vulnerable devices at scale. This undermines trust in Apple’s privacy features and could lead to targeted surveillance, profiling, or data harvesting by malicious actors. The vulnerability affects a broad range of Apple devices, including desktops, laptops, mobile devices, and IoT platforms, increasing the scope of potential impact. Although no integrity or availability impacts are noted, the confidentiality breach is significant, especially for privacy-conscious users and organizations handling sensitive data.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 02:09 UTC

Technical details

References

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