Apple iOS/iPadOS Web memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple iOS and iPadOS. The impacted element is an unknown function of the component Web Handler. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2025-31277. It is possible to launch the attack remotely. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Apple iOS and iPadOS (the affected version unknown). This vulnerability affects an unknown part of the component Web Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, watchOS 11.6, visionOS 2.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6. Processing maliciously crafted web content may lead to memory corruption.

The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2025-31277 since 03/27/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/20/2026).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 243030 (macOS 15.x < 15.6 Multiple Vulnerabilities (124149)), which helps to determine the existence of the flaw in a target environment. This issue was added on 03/20/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 04/03/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (243030). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 8.8
ADP CISA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 243030
Nessus Name: macOS 15.x < 15.6 Multiple Vulnerabilities (124149)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/27/2025 CVE reserved
07/30/2025 +124 days Advisory disclosed
07/30/2025 +0 days VulDB entry created
03/20/2026 +233 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2025-31277 (🔒)
GCVE (CVE): GCVE-0-2025-31277
GCVE (VulDB): GCVE-100-318160
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 07/30/2025 08:21
Updated: 03/20/2026 17:57
Changes: 07/30/2025 08:21 (55), 07/30/2025 13:21 (1), 07/30/2025 20:58 (2), 03/19/2026 20:39 (12), 03/20/2026 17:57 (13)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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