VulnerabilityPublished 16 Sep 2024Updated 2 Apr 2026

CVE-2024-40847: Apple macOS · An app may be able to access sensitive user data

Affects Apple macOSSource CVE Database V5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score

5.5Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
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: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
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 16 Sep 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 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 macOS	Affected =0	Fixed in–

AI-suggested

To mitigate CVE-2024-40847, organizations should prioritize updating affected macOS systems to Sequoia 15, Sonoma 14.7, or Ventura 13.7 or later versions where the vulnerability is fixed. Beyond patching, organizations should enforce strict application control policies using Apple’s built-in security features such as Gatekeeper and System Integrity Protection (SIP) to restrict installation and execution of untrusted or unsigned applications. Employ endpoint detection and response (EDR) solutions capable of monitoring for suspicious local app behaviors that attempt to access sensitive data. Limit user privileges to the minimum necessary to reduce the risk of privilege escalation and local exploitation. Regularly audit installed applications and remove unnecessary or untrusted software. Educate users about the risks of installing unauthorized apps and the importance of applying system updates promptly. For high-security environments, consider implementing additional data access controls and encryption to protect sensitive information even if accessed by unauthorized apps.

Description

The issue was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15, macOS Sonoma 14.7, macOS Ventura 13.7. An app may be able to access sensitive user data.

Impact

The primary impact of CVE-2024-40847 is unauthorized disclosure of sensitive user data, which can lead to privacy violations, leakage of confidential corporate information, and potential compliance breaches. Since the vulnerability requires local access and privileges, the risk is higher in environments where users may install untrusted applications or where attackers have gained limited access to a system. The lack of required user interaction lowers the barrier for exploitation once local access is obtained. Although integrity and availability are not affected, the confidentiality breach can facilitate further attacks such as social engineering, identity theft, or targeted espionage. Organizations relying on macOS devices, especially in sectors handling sensitive data like finance, healthcare, and government, may face increased risk if patches are not applied promptly. The absence of known exploits in the wild currently reduces immediate threat but does not eliminate future exploitation possibilities.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 2 Apr 2026, 23:38 UTC

Technical details

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