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CVE-2026-65340

MEDIUM 4.3

Published 2026-08-17 · Last modified 2026-08-18

This issue was addressed through improved state management. This issue is fixed in 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. Processing maliciously crafted web content may lead to an unexpected Safari crash.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 10th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

4.3CVSS 3.1 · MEDIUM

  • ConfidentialityNone
  • IntegrityNone
  • AvailabilityLow

What an attacker needs

  • Access: Reachable over the network — no local access needed
  • Privileges: No account or privileges required
  • User interaction: A user must take an action (click / open a file)
  • Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-65340/poc.jsonMachine-readable PoC index for this CVE (for automation).

Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-65340/poc.json

Affected

Vendors Apple

Products Safari Ios And Ipados Macos Ipados Iphone Os

Weakness (CWE)

  • CWE-20: Improper Input Validation
  • CWE-703: Improper Check or Handling of Exceptional Conditions

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Known Affected Software Configurations

VendorProductVersion range
AppleSafari< 26.6.1
AppleIpados< 18.7.10
AppleIpados≥ 26.0 and < 26.6.1
AppleIphone Os< 18.7.10
AppleIphone Os≥ 26.0 and < 26.6.1
AppleMacos≥ 26.0 and < 26.6.2

All CVSS metrics

  • MEDIUM 4.3 v3.1 · ADP Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  • MEDIUM 4.3 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References

Advisories

Sources: NVD · CVE.org · EPSS