VulnerabilityPublished 28 Oct 2024Updated 2 Apr 2026

CVE-2024-44155: Apple Safari · Maliciously crafted web content may violate iframe sandboxing policy

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 09:15 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 46% 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:N/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: High
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: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 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

1. Apply the latest security updates from Apple immediately, including Safari 18, iOS 17.7.1 and 18, iPadOS 17.7.1 and 18, macOS Sequoia 15, and watchOS 11, to ensure the vulnerability is patched. 2. Educate users about the risks of visiting untrusted or suspicious websites, emphasizing caution with links from unknown sources to reduce the likelihood of user interaction exploitation. 3. Implement network-level protections such as web filtering and DNS filtering to block access to known malicious domains that could host exploit content. 4. Use content security policies (CSP) and browser security features to limit iframe usage and restrict third-party content where feasible. 5. Monitor browser behavior and logs for unusual iframe activity or unexpected content modifications that could indicate exploitation attempts. 6. For organizations deploying managed Apple devices, enforce update policies and restrict installation of untrusted applications or profiles that could facilitate exploitation. 7. Stay informed on threat intelligence feeds for any emerging exploit techniques targeting this vulnerability to adapt defenses accordingly.

Description

A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 18, iOS 17.7.1 and iPadOS 17.7.1, iOS 18 and iPadOS 18, macOS Sequoia 15, watchOS 11. Maliciously crafted web content may violate iframe sandboxing policy.

Impact

The primary impact of CVE-2024-44155 is on the integrity of web content rendered within Safari's iframe sandbox. By bypassing sandbox restrictions, attackers can potentially manipulate iframe content, inject malicious scripts, or alter webpage behavior, which could facilitate further attacks such as phishing, session hijacking, or unauthorized actions within the browser context. Although confidentiality and availability are not directly affected, the integrity compromise can lead to broader security issues, especially in environments relying heavily on web applications and embedded content. Organizations with users on affected Apple platforms risk exposure to targeted web-based attacks that exploit this vulnerability. The requirement for user interaction limits automated exploitation but does not eliminate risk, as users may be tricked into visiting malicious sites. The lack of known exploits in the wild suggests limited current exploitation but does not preclude future attacks once the vulnerability becomes widely known.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 2 Apr 2026, 23:47 UTC

Technical details

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