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CVE-2025-43300 KEVPublic exploit Critical · 10.0 EPSS 65.2%

Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability

Apple · iOS, iPadOS, and macOS

Summary

An out-of-bounds write flaw in the Apple iOS, iPadOS, and macOS operating systems allows memory corruption when a malicious image file is processed. An attacker can exploit it over the network without authentication or user interaction beyond the image being processed, with no special configuration required.

Official description · NVD

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

Breakdown
69.9 / 100
Exploited
Yes, in CISA KEV
Reports
0
Tactics
0/15

First seen exploited 1 day before it was disclosed. Public exploit code (PoC-in-GitHub) appeared 3 days after disclosure.

  1. First seen exploitedVulnCheck KEV evidence1 day before
  2. DisclosedAdded to CISA KEVEU database agreesday 0
  3. Public exploit codePoC-in-GitHub+3 days

CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.

techniques

No techniques linked

No high- or medium-confidence techniques. The 2 available links are lower confidence and listed below.

Lower-confidence links (2)

These come from early or generic mappings, text matching, or contradict this CVE’s details (for example a public-facing technique on a bug that needs a user to open a file). Shown for completeness.

  • Malicious FileT1204.002 server-side bug exploitable without user interaction; client-execution technique does not fit
  • Exploitation for Client ExecutionT1203 server-side bug exploitable without user interaction; client-execution technique does not fit

What security researchers reported

Not named in any threat report yet

Also mentioned in 50 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

13 links, grouped by NVD tag
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