VulnerabilityPublished 27 Jan 2025Updated 2 Apr 2026

CVE-2025-24143: Apple Safari · Missing Authorization

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium · fixed in 18.3 : update Apple Safari when convenient.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 18.3

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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 27 Jan 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 or the CVSS exploit maturity 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-2025-24143, organizations and users should promptly update Safari to version 18.3 or later and ensure their Apple devices are running iOS 18.3, iPadOS 18.3, macOS Sequoia 15.3, or visionOS 2.3 or newer. Beyond patching, organizations should implement strict web content filtering to block access to known malicious or suspicious websites that could attempt fingerprinting. Deploying privacy-enhancing browser extensions or settings that limit fingerprinting vectors can further reduce risk. Network-level protections such as DNS filtering and intrusion detection systems tuned for web-based threats can help identify and block malicious traffic. Security awareness training should emphasize the risks of interacting with untrusted websites and the importance of keeping browsers and operating systems up to date. For high-risk environments, consider using alternative browsers with stronger anti-fingerprinting protections or sandboxing Safari sessions. Monitoring for unusual network or browser behavior indicative of fingerprinting attempts can provide early detection. Finally, organizations should review privacy policies and compliance controls to ensure they address risks related to browser fingerprinting and user tracking.

Description

The issue was addressed with improved access restrictions to the file system. This issue is fixed in Safari 18.3, iOS 18.3 and iPadOS 18.3, macOS Sequoia 15.3, visionOS 2.3. A maliciously crafted webpage may be able to fingerprint the user.

Impact

The primary impact of CVE-2025-24143 is on user privacy and confidentiality. By enabling malicious webpages to fingerprint users, attackers can track individuals across browsing sessions and websites, potentially circumventing privacy protections such as cookie restrictions and private browsing modes. This can lead to profiling, targeted advertising, or more malicious tracking activities. For organizations, this vulnerability could expose sensitive user data or undermine privacy compliance efforts, especially in sectors like finance, healthcare, and government where user anonymity and data protection are critical. While the vulnerability does not allow code execution or system compromise, the erosion of privacy can have reputational and regulatory consequences. The ease of exploitation (requiring only user interaction) and the widespread use of Safari on Apple devices globally increase the scope of affected systems. The lack of known exploits in the wild reduces immediate risk but does not eliminate the potential for future abuse. Overall, the vulnerability represents a medium risk to confidentiality with no direct impact on integrity or availability.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 00:36 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

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