CVE-2025-31277

HIGH

8.8

CVSS Score

Published: July 29, 2025 at 11:29 PM UTC

Updated: September 21, 2026 at 07:35 PM UTC

15 products affected across 4 vendorsmacOSiPhone OSEnterprise Linux

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Severity

HIGH8.8

Exploitation

CISA KEV

Exploit prediction

EPSS 2%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score1.7%

EPSS (Exploit Prediction Scoring System) estimates a 1.7% chance this CVE is exploited in the wild within the next 30 days — higher than 76% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

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.

Ransomware Use

Unknown

Added to KEV

Mar 20, 2026

Remediation Due

Apr 3, 2026

206 days overdue

Notes

https://support.apple.com/en-us/124147

https://support.apple.com/en-us/124149

https://support.apple.com/en-us/124152

https://support.apple.com/en-us/124153

https://support.apple.com/en-us/124155

https://nvd.nist.gov/vuln/detail/CVE-2025-31277

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

v < 18.6

Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 18.6

Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 15.615.0 ≤ v < 15.6

Affected range stops below 15.6, so it looks safe — our inference, not a vendor statement

Safari · Apple

95%

v < 18.6

Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 18.6

Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement

visionOS · Apple

95%

v < 2.6

Affected range stops below 2.6, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 11.6

Affected range stops below 11.6, so it looks safe — our inference, not a vendor statement

Enterprise Linux · Red Hatrpm

95%

6.0 7.0 8.0 9.0

Vendor states this is fixed in 0:2.50.0-1.el7_9 (unaffected)

Vendor states this is fixed in 0:2.50.0-1.el8_10 (unaffected)

Vendor states this is fixed in 0:2.50.0-1.el8_2 (unaffected)

Vendor states this is fixed in 0:2.50.0-1.el8_4 (unaffected)

Vendor states this is fixed in 0:2.50.0-1.el8_6 (unaffected)

Vendor states this is fixed in 0:2.50.0-1.el8_8.1 (unaffected)

Vendor states this is fixed in 0:2.50.0-2.el9_0 (unaffected)

Vendor states this is fixed in 0:2.50.0-2.el9_2 (unaffected)

Vendor states this is fixed in 0:2.50.0-2.el9_4 (unaffected)

Vendor states this is fixed in 0:2.50.1-0.el9_6 (unaffected)

Vendor states this is fixed in 7 (unaffected)

Vendor states this is fixed in 6 (unknown)

Enterprise Linux Aus · Red Hatrpm

95%

8.2 8.4 8.6

Enterprise Linux Els · Red Hatrpm

95%

7.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (25)

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124147

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124149

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124152

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124153

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124154

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/124155

Mailing ListThird Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

http://seclists.org/fulldisclosure/2025/Aug/0

Mailing ListThird Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

http://seclists.org/fulldisclosure/2025/Jul/30

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-119CWE-120

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