CVE-2026-43740

MEDIUM 6.5

Published 2026-06-29 · Last modified 2026-06-29

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the disclosure of process memory.

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

6.5CVSS 3.1 · MEDIUM

ConfidentialityHigh
IntegrityNone
AvailabilityNone

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

Affected

Vendors Apple

Products Safari Ios And Ipados Macos

Weakness (CWE)

CWE-416: Use after free
CWE-119: Memory buffer overflow

CVSS vector

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

References

Technical & other

Sources: NVD · CVE.org · EPSS