CVE-2026-65341Network attack vector

Memory corruption via crafted web content

Published Aug 17, 2026 · Updated Aug 18, 2026

Memory corruption in WebKit in Apple Safari before 26.6.1 and macOS before 26.6.2 allows remote attackers to corrupt memory via crafted web content. Apple attributes the flaw only to WebKit memory handling and does not disclose the vulnerable function, object lifetime error, or parsing path that performs the unsafe operation on attacker-controlled content. Exposure requires a target to load malicious web content in Safari or another affected WebKit-based context; public records bound the consequence to memory corruption and do not describe code execution or in-the-wild exploitation.

CVSS severity5.4
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in WebKit in Apple Safari before 26.6.1 and macOS before 26.6.2 allows remote attackers to corrupt memory via crafted web content. Apple attributes the flaw only to WebKit memory handling and does not disclose the vulnerable function, object lifetime error, or parsing path that performs the unsafe operation on attacker-controlled content. Exposure requires a target to load malicious web content in Safari or another affected WebKit-based context; public records bound the consequence to memory corruption and do not describe code execution or in-the-wild exploitation.

The record

CVE
CVE-2026-65341
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
Safari
Classifications
CWE-119, CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <26.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · Safariversion=0 <26.6.1
Apple · macOSversion=0 <26.6.2

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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