VulnerabilityPublished 28 Oct 2024Updated 2 Apr 2026

CVE-2024-44240: Apple iOS and iPadOS · Processing a maliciously crafted font may result in the disclosure of process memory

Affects Apple iOS and iPadOSSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium · fixed in 17.7.1 : update Apple iOS and iPadOS when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 17.7.1

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 28 Oct 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 iOS and iPadOS	Affected =0	Fixed in–

AI-suggested

To mitigate CVE-2024-44240, organizations should: 1) Immediately deploy the security updates released by Apple for all affected platforms, including iOS 17.7.1 and later, iPadOS 17.7.1 and later, macOS Sequoia 15.1 and later, macOS Sonoma 14.7.1 and later, macOS Ventura 13.7.1 and later, tvOS 18.1 and later, visionOS 2.1 and later, and watchOS 11.1 and later. 2) Implement strict email and document filtering to block or quarantine files containing suspicious or unknown font files, especially from untrusted sources. 3) Educate users about the risks of opening unsolicited attachments or links that may contain malicious fonts. 4) Employ endpoint detection and response (EDR) solutions capable of monitoring abnormal font processing or memory access patterns. 5) Restrict the use of third-party applications that handle fonts outside of trusted Apple ecosystem apps. 6) Maintain regular backups and incident response plans to quickly address any potential exploitation. These steps go beyond generic patching by focusing on reducing exposure to malicious font files and enhancing detection capabilities.

Description

The issue was addressed with improved checks. This issue is fixed in iOS 17.7.1 and iPadOS 17.7.1, iOS 18.1 and iPadOS 18.1, macOS Sequoia 15.1, macOS Sonoma 14.7.1, macOS Ventura 13.7.1, tvOS 18.1, visionOS 2.1, watchOS 11.1. Processing a maliciously crafted font may result in the disclosure of process memory.

Impact

The primary impact of CVE-2024-44240 is unauthorized disclosure of sensitive information from process memory on affected Apple devices. This can compromise confidentiality by leaking data such as passwords, encryption keys, or personal information stored in memory. Although the vulnerability does not directly affect system integrity or availability, the leaked information could be leveraged by attackers to conduct further attacks, including privilege escalation or targeted espionage. Organizations relying heavily on Apple ecosystems—especially those handling sensitive or regulated data—face increased risk of data breaches if devices remain unpatched. The requirement for user interaction limits mass exploitation but targeted phishing or malicious document campaigns could exploit this flaw. Given the broad range of affected Apple platforms, including mobile devices, desktops, and emerging OSes like visionOS, the potential attack surface is extensive. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, emphasizing the need for timely patching.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 00:01 UTC

Technical details

References

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