---
id: "CVE-2025-31277"
kind: "vulnerability"
aliases: ["CVE-2025-31277"]
title: "The issue was addressed with improved memory handling"
severity: "high"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Apple Multiple Products", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "apple safari", "fixed": ["18.6"], "affected": "< 18.6", "ecosystem": "vendor"}, {"name": "apple ipados", "fixed": ["18.6"], "affected": "< 18.6", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["18.6"], "affected": "< 18.6", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["15.6"], "affected": ">= 15.0, < 15.6", "ecosystem": "vendor"}, {"name": "apple tvos", "fixed": ["18.6"], "affected": "< 18.6", "ecosystem": "vendor"}, {"name": "apple visionos", "fixed": ["2.6"], "affected": "< 2.6", "ecosystem": "vendor"}, {"name": "apple watchos", "fixed": ["11.6"], "affected": "< 11.6", "ecosystem": "vendor"}, {"name": "webkitgtk", "fixed": ["2.50.0"], "affected": "< 2.50.0", "ecosystem": "vendor"}, {"name": "wpewebkit wpe webkit", "fixed": ["2.50.0"], "affected": "< 2.50.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux", "fixed": [], "affected": "= 6.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux", "fixed": [], "affected": "= 7.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux", "fixed": [], "affected": "= 8.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux", "fixed": [], "affected": "= 9.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux aus", "fixed": [], "affected": "= 8.2", "ecosystem": "vendor"}, {"name": "redhat enterprise linux aus", "fixed": [], "affected": "= 8.4", "ecosystem": "vendor"}, {"name": "redhat enterprise linux aus", "fixed": [], "affected": "= 8.6", "ecosystem": "vendor"}, {"name": "redhat enterprise linux els", "fixed": [], "affected": "= 7.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux eus", "fixed": [], "affected": "= 8.4", "ecosystem": "vendor"}, {"name": "redhat enterprise linux eus", "fixed": [], "affected": "= 8.6", "ecosystem": "vendor"}, {"name": "redhat enterprise linux eus", "fixed": [], "affected": "= 9.4", "ecosystem": "vendor"}, {"name": "redhat enterprise linux tus", "fixed": [], "affected": "= 8.6", "ecosystem": "vendor"}, {"name": "redhat enterprise linux tus", "fixed": [], "affected": "= 8.8", "ecosystem": "vendor"}, {"name": "redhat enterprise linux update services for sap solutions", "fixed": [], "affected": "= 8.6", "ecosystem": "vendor"}, {"name": "redhat enterprise linux update services for sap solutions", "fixed": [], "affected": "= 8.8", "ecosystem": "vendor"}, {"name": "redhat enterprise linux update services for sap solutions", "fixed": [], "affected": "= 9.0", "ecosystem": "vendor"}, {"name": "redhat enterprise linux update services for sap solutions", "fixed": [], "affected": "= 9.2", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apple", "exploited", "infrastructure", "ios", "ipados", "macos", "safari"]
not_affected_if: ["unpatched-builds-not-in-use"]
published_at: "2025-07-30T00:15:30+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-31277", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31277", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# The issue was addressed with improved memory handling

Apple Safari, iOS, iPadOS, macOS, watchOS, visionOS and tvOS have a buffer overflow in web content processing. A malicious web page can corrupt memory, which can lead to code execution in the browser or device.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Apple Multiple Products affected ? fixed ?
- vendor:apple safari affected < 18.6 fixed 18.6
- vendor:apple ipados affected < 18.6 fixed 18.6
- vendor:apple iphone os affected < 18.6 fixed 18.6
- vendor:apple macos affected >= 15.0, < 15.6 fixed 15.6
- vendor:apple tvos affected < 18.6 fixed 18.6
- vendor:apple visionos affected < 2.6 fixed 2.6
- vendor:apple watchos affected < 11.6 fixed 11.6
- vendor:webkitgtk affected < 2.50.0 fixed 2.50.0
- vendor:wpewebkit wpe webkit affected < 2.50.0 fixed 2.50.0
- vendor:redhat enterprise linux affected = 6.0 fixed ?
- vendor:redhat enterprise linux affected = 7.0 fixed ?
- vendor:redhat enterprise linux affected = 8.0 fixed ?
- vendor:redhat enterprise linux affected = 9.0 fixed ?
- vendor:redhat enterprise linux aus affected = 8.2 fixed ?
- vendor:redhat enterprise linux aus affected = 8.4 fixed ?
- vendor:redhat enterprise linux aus affected = 8.6 fixed ?
- vendor:redhat enterprise linux els affected = 7.0 fixed ?
- vendor:redhat enterprise linux eus affected = 8.4 fixed ?
- vendor:redhat enterprise linux eus affected = 8.6 fixed ?
- vendor:redhat enterprise linux eus affected = 9.4 fixed ?
- vendor:redhat enterprise linux tus affected = 8.6 fixed ?
- vendor:redhat enterprise linux tus affected = 8.8 fixed ?
- vendor:redhat enterprise linux update services for sap solutions affected = 8.6 fixed ?
- vendor:redhat enterprise linux update services for sap solutions affected = 8.8 fixed ?
- vendor:redhat enterprise linux update services for sap solutions affected = 9.0 fixed ?
- vendor:redhat enterprise linux update services for sap solutions affected = 9.2 fixed ?

## How to check

Check the device OS version under Settings > General > About (iOS/iPadOS/visionOS) or Apple menu > About This Mac (macOS); Safari version is shown in Safari > About Safari.

## Fix

Update Apple devices and Safari to the latest patched release per Apple's security notes; the specific fixed versions are unknown from the sources.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-31277
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-31277

## From the sources

Apple Safari, iOS, watchOS, visionOS, iPadOS, macOS, and tvOS contain a buffer overflow vulnerability that could allow the processing of maliciously crafted web content which may lead to memory corruption.

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

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_