VulnerabilityPublished 15 Sep 2025Updated 2 Apr 2026

CVE-2025-43355: Apple iOS and iPadOS · Type Confusion

Affects Apple iOS and iPadOSSource CVE Database V5

Not known to be exploited · CVSS 5.5 Medium · fixed in 18.7 : update Apple iOS and iPadOS when convenient.

Data as of 26 Oct 2026, 14:05 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 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 18.7

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

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

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: 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: 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 15 Sep 2025
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-2025-43355, organizations should: 1) Prioritize deploying the latest Apple OS updates that include the fix (iOS/iPadOS 18.7 and 26, macOS Sequoia 15.7, Sonoma 14.8, Tahoe 26, tvOS 26, visionOS 26, watchOS 26). 2) Enforce strict app installation policies, allowing only apps from trusted sources such as the Apple App Store to reduce the risk of malicious apps exploiting this vulnerability. 3) Educate users about the risks of installing untrusted applications and the importance of user interaction in triggering the exploit. 4) Implement mobile device management (MDM) solutions to monitor and control app installations and OS versions across the device fleet. 5) Regularly audit devices for compliance with patch levels and remove or quarantine devices that cannot be updated promptly. 6) Monitor device logs and behavior for signs of crashes or abnormal activity that could indicate exploitation attempts. 7) For high-security environments, consider restricting local access to devices and enforcing strong authentication to reduce the risk of unauthorized physical or local access.

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. An app may be able to cause a denial-of-service.

Impact

The primary impact of CVE-2025-43355 is denial-of-service, which can disrupt the availability of Apple devices and the applications running on them. For organizations relying heavily on Apple hardware and software ecosystems, such as enterprises using iPhones, iPads, or Macs for business-critical operations, this could lead to productivity loss, interrupted communications, and potential operational downtime. While the vulnerability does not affect confidentiality or integrity, the availability impact can be significant in environments where device uptime is critical, such as healthcare, finance, or emergency services. The requirement for local access and user interaction limits the attack surface, reducing the likelihood of widespread remote exploitation. However, targeted attacks via malicious apps or social engineering could still pose a threat. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the potential for future exploitation once the vulnerability becomes more widely known.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 02:05 UTC

WeaknessesCWE-843

Technical details

References

Community reviews

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