Apple Multiple Products Buffer Overflow Vulnerability
Apple — Safari
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.
8.8
1.5%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- Jul 29, 2025
- Modified
- Jul 15, 2026
- Added to KEV
- Mar 20, 2026
- Federal patch due
- Apr 3, 2026
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.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-31277, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-31277 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2025-31277?
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.
How severe is CVE-2025-31277?
CVE-2025-31277 has a CVSS base score of 8.8 out of 10 (CVSS 3.1).
Is CVE-2025-31277 actively exploited in the wild?
Yes. CVE-2025-31277 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Mar 20, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-31277?
1.5% - meaning FIRST.org's EPSS model estimates a 1.5% probability this vulnerability will be exploited in the wild within 30 days (71% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-31277?
CVE-2025-31277 is classified under CWE-119, CWE-120 (CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer).
Cross-checked against
Impactr finds and proves whether CVE-2025-31277 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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