CVE-2024-54479VulnerabilityPublished 11 Dec 2024Updated 2 Apr 2026

CVE-2024-54479: Apple Safari · Processing maliciously crafted web content may lead to an unexpected process crash

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 7.5 High · fixed in 18.2 : patch Apple Safari soon.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 1.5% chance of exploitation in 30 days – higher than 75% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 18.2

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

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

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: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Dec 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

To mitigate CVE-2024-54479, organizations should prioritize updating all affected Apple devices to the patched versions of Safari and operating systems as soon as possible. Specifically, upgrade to Safari 18.2 and the corresponding OS versions: iOS 18.2, iPadOS 18.2 and 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, and watchOS 11.2. Network administrators can implement web filtering to block access to suspicious or untrusted websites that could host malicious content. Deploy endpoint protection solutions capable of detecting abnormal browser crashes or exploit attempts. Educate users to avoid visiting untrusted links or websites, especially those received via unsolicited emails or messages. For high-security environments, consider restricting Safari usage or employing alternative browsers until patches are applied. Monitor logs and incident detection systems for unusual browser crashes or patterns indicative of exploitation attempts. Maintain an inventory of Apple devices to ensure all are updated promptly. Finally, coordinate with Apple support channels for any additional guidance or updates related to this vulnerability.

Description

The issue was addressed with improved checks. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2. Processing maliciously crafted web content may lead to an unexpected process crash.

Impact

The primary impact of CVE-2024-54479 is denial of service through unexpected process crashes in Safari, which can disrupt user productivity and availability of web-based services on Apple devices. Organizations with large deployments of Apple hardware, including enterprises, educational institutions, and government agencies, may experience operational interruptions if users access malicious web content. The vulnerability could be leveraged by attackers to conduct targeted DoS attacks against specific users or groups, potentially as part of broader campaigns to degrade service or distract from other malicious activities. Although it does not allow data theft or system compromise, repeated crashes could lead to user frustration, loss of trust, and increased support costs. In critical environments where Safari is used for accessing internal or cloud applications, this could impact business continuity. The lack of required user interaction or privileges lowers the barrier for exploitation, increasing the risk of widespread impact. However, the absence of known exploits in the wild currently limits immediate threat but does not eliminate future risk.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 00:16 UTC

Technical details

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