PatchSiren cyber security CVE debrief
CVE-2026-65340 Apple CVE debrief
This CVE debrief is based on the supplied source corpus. The CVE record was published on 2026-08-17T22:17:24.973Z and has not been modified since then. The NVD entry is currently Modified. The vulnerability affects various Apple products with web content processing capabilities, including Safari, iOS, iPadOS, macOS Tahoe, and visionOS 27. Improved state management addresses the issue, which could lead to an unexpected Safari crash if exploited. Defenders should assess exposure and prioritize verification for systems with web content processing capabilities.
- Vendor
- Apple
- Product
- Safari
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-17
- Original CVE updated
- 2026-09-14
- Advisory published
- 2026-08-17
- Advisory updated
- 2026-09-14
Who should care
Defenders responsible for Apple products, especially those with web content processing capabilities, should assess exposure and prioritize verification. This includes teams managing Safari, iOS, iPadOS, macOS Tahoe, and visionOS 27. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Defenders should also plan vendor-supported updates or mitigations through normal change control where
Why it matters
Defenders should prioritize verifying exposure in Safari and related Apple products, especially those with web content processing capabilities, and update to fixed versions to prevent potential crashes.
- Verification of exposure in Safari and related Apple products is required to prevent potential crashes.
- Defenders should prioritize updating to fixed versions to prevent potential exploitation.
Technical summary
Processing maliciously crafted web content may lead to an unexpected Safari crash. This issue was addressed through improved state management in various Apple products, including Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, and visionOS 27. The vulnerability affects systems with web content processing capabilities, emphasizing the need for defenders to assess exposure and prioritize verification. Improved state management is a key aspect of the fix, ensuring that malicious content does not cause unexpected behavior.
Defensive priority
Defenders should prioritize verifying exposure in Safari and related Apple products, especially those with web content processing capabilities.
Recommended defensive actions
- Verify exposure in Safari and related Apple products
- Assess web content processing capabilities
- Update to fixed versions: Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Evidence notes
The CVE record and NVD detail page provide information on the vulnerability, which was addressed through improved state management in various Apple products. The issue could lead to an unexpected Safari crash if maliciously crafted web content is processed. Defenders should verify exposure in Safari and related Apple products, especially those with web content processing capabilities, and update to fixed versions. The CVE record and NVD detail page provide information on the vulnerability, which was addressed through improved state in
Sources and references
Verified primary and authoritative sources
-
CVE-2026-65340 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-65340
CVE Program - Official CVE Program record with source-provided CVE metadata.
-
CVE-2026-65340 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-65340
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
-
Source reference
Unverified legacy reference
URL: https://support.apple.com/en-us/148281
[email protected] - Release Notes, Vendor Advisory
-
Source reference
Unverified legacy reference
URL: https://support.apple.com/en-us/148282
[email protected] - Release Notes, Vendor Advisory
-
Source reference
Unverified legacy reference
URL: https://support.apple.com/en-us/148286
[email protected] - Release Notes, Vendor Advisory
-
Source reference
Unverified legacy reference
URL: https://support.apple.com/en-us/148287
[email protected] - Release Notes, Vendor Advisory
-
Source reference
Unverified legacy reference
URL: https://support.apple.com/en-us/149038
Methodology and review provenance
AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.