CVE-2025-31277

Name: CVE-2025-31277
Creator: NVD / NIST
Published: 2025-07-30T00:15:30.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 1.43%

Last modified Jun 17, 2026

CVE-2025-31277 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. CISA has confirmed active exploitation in the wild. EPSS estimates a 1.43% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.43%

69.6th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Apr 3, 2026.

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Apple	Safari	< 18.6
Apple	Ipados	< 18.6
Apple	Iphone Os	< 18.6
Apple	Macos	>= 15.0, < 15.6
Apple	Tvos	< 18.6
Apple	Visionos	< 2.6
Apple	Watchos	< 11.6

References

https://support.apple.com/en-us/124147Release Notes, Vendor Advisory
https://support.apple.com/en-us/124149Release Notes, Vendor Advisory
https://support.apple.com/en-us/124152Release Notes, Vendor Advisory
https://support.apple.com/en-us/124153Release Notes, Vendor Advisory
https://support.apple.com/en-us/124154Release Notes, Vendor Advisory
https://support.apple.com/en-us/124155Release Notes, Vendor Advisory
http://seclists.org/fulldisclosure/2025/Aug/0Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Jul/30Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Jul/32Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Jul/36Mailing List, Third Party Advisory
https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/Technical Description
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31277US Government Resource

Timeline

Published: Jul 30, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-31277?

How severe is CVE-2025-31277?

CVE-2025-31277 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-31277?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-31277?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST