iOS and iPadOS: Uncontrolled Resource Consumption
CVE-2025-24126 is a high-severity uncontrolled resource consumption vulnerability in iOS and iPadOS from Apple, with a CVSS 3.1 base score of 7.3 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. The record lists version 18.3 as the first without the flaw, so updating iOS and iPadOS to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.36% chance of exploitation within 30 days, higher than 72% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update iOS and iPadOS to 18.3 or a later version.
- Update macOS to 13.7.5 or 14.7.5 or 15.3, whichever matches your release line, or a later version.
- Update tvOS to 18.3 or a later version.
- Read the advisory on support.apple.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Apple | iOS and iPadOS | before 18.3 | 18.3 |
| Apple | macOS | before 13.7.5; before 14.7.5; before 15.3 | 13.7.5, 14.7.5, 15.3 |
| Apple | tvOS | before 18.3 | 18.3 |
| Apple | visionOS | before 2.3 | 2.3 |
| Apple | iPadOS | before 18.3 | 18.3 |
| Apple | Iphone OS | before 18.3 | 18.3 |
| Apple | watchOS | before 11.3 | 11.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.3 | High | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
An input validation issue was addressed. This issue is fixed in iOS 18.3 and iPadOS 18.3, macOS Sequoia 15.3, macOS Sonoma 14.7.5, macOS Ventura 13.7.5, tvOS 18.3, visionOS 2.3. An attacker on the local network may be able to corrupt process memory.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How developers prevent this class of flaw
- Ensure that protocols have specific limits of scale placed on them.
- Ensure that all failures in resource allocation place the system into a safe posture.
More Uncontrolled Resource Consumption vulnerabilities (CWE-400)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- support.apple.com/en-us/122066Release Notes
- support.apple.com/en-us/122068Release Notes
- support.apple.com/en-us/122072Release Notes
- support.apple.com/en-us/122073Release Notes
Other references
Other vulnerabilities in iOS and iPadOS
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
Recent Uncontrolled Resource Consumption vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.1 Critical severity
- 7.5 High severity
- 7.5 High severity
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