CVE-2024-23254VulnerabilityPublished 8 Mar 2024Updated 2 Apr 2026

CVE-2024-23254: Apple Safari · A malicious website may exfiltrate audio data cross-origin

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 1.2% chance of exploitation in 30 days – higher than 69% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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 8 Mar 2024
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 2026-10-26.

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

Apple has released official patches addressing this vulnerability in Safari 17.4, iOS 17.4, iPadOS 17.4, macOS Sonoma 14.4, tvOS 17.4, visionOS 1.1, and watchOS 10.4. Users and administrators should apply these updates promptly to remediate the issue. Since this is a client-side browser vulnerability, updating the affected Apple operating systems and Safari versions is the primary mitigation. No additional vendor-recommended mitigations or workarounds are indicated in the advisory.

Description

CVE-2024-23254 is a medium-severity vulnerability in Apple Safari and related WebKit components where processing maliciously crafted web content may prevent Content Security Policy (CSP) from being enforced. This issue could allow a malicious website to exfiltrate audio data cross-origin. The vulnerability was addressed by Apple with improved UI handling and validation. It affects Safari 17.4, iOS 17.4, iPadOS 17.4, macOS Sonoma 14.4, tvOS 17.4, visionOS 1.1, and watchOS 10.

Impact

The vulnerability allows a remote attacker controlling a malicious website to bypass Content Security Policy enforcement in Safari and related WebKit-based browsers, potentially enabling cross-origin exfiltration of audio data. This compromises user privacy by allowing unauthorized access to audio streams. There is no indication of integrity or availability impact. No known active exploitation has been reported. The impact is limited to confidentiality loss of audio data accessible via the browser.

Summary

CVE-2024-23254 is a WebKit vulnerability impacting Apple Safari and related platforms that allows a malicious website to exfiltrate audio data across origins by bypassing Content Security Policy enforcement. The root cause was a logic issue in WebKit's handling of UI and CSP validation. Apple fixed this vulnerability by improving UI handling and validation mechanisms. The fix is included in Safari 17.4 and corresponding OS updates released in March 2024. The CVSS v3.1 base score is 6.5, reflecting a network attack vector with low attack complexity, no privileges required, user interaction required, and high confidentiality impact but no integrity or availability impact.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Apr 2026, 23:04 UTC

Technical details

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