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CVE-2025-43300

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…

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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.
CVSS 10.0 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.8/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 10: +1.50
  • Fresh EPSS: 65.16%: +0.33

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 28 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

CyberSecurityNews
Press · 01 Jan 2026, 08:00 · Top 10 High-Risk Vulnerabilities Of 2026 that Exploited in the Wild - CyberSecurityNews
The Hacker News
Press · 13 Dec 2025, 08:00 · Apple Issues Security Updates After Two WebKit Flaws Found Exploited in the Wild - The Hacker News
The Hacker News
Press · 25 Nov 2025, 08:00 · CISA Warns of Active Spyware Campaigns Hijacking High-Value Signal and WhatsApp Users - The Hacker News
The Hacker News
Press · 07 Nov 2025, 08:00 · Samsung Mobile Flaw Exploited as Zero-Day to Deploy LANDFALL Android Spyware - The Hacker News
Unit 42
Press · 07 Nov 2025, 08:00 · LANDFALL: New Commercial-Grade Android Spyware in Exploit Chain Targeting Samsung Devices - Unit 42
See all 28 source documents
Recorded Future
Press · 17 Oct 2025, 07:00 · September 2025 CVE Landscape - Recorded Future
Security Affairs
Press · 17 Sep 2025, 07:00 · Apple backports fix for actively exploited CVE-2025-43300 - Security Affairs
csoonline.com
Press · 17 Sep 2025, 07:00 · Apple patches critical zero-day in ImageIO amid reports of targeted exploits - csoonline.com
CyberScoop
Press · 16 Sep 2025, 07:00 · Apple addresses dozens of vulnerabilities in latest software for iPhones, iPads and Macs - CyberScoop
The Hacker News
Press · 16 Sep 2025, 07:00 · Apple Backports Fix for CVE-2025-43300 Exploited in Sophisticated Spyware Attack - The Hacker News
Security Affairs
Press · 12 Sep 2025, 07:00 · Samsung fixed actively exploited zero-day - Security Affairs
Lookout
Press · 09 Sep 2025, 07:00 · CVE-2025-43300 is a critical zero‑day in Apple’s Image I/O framework | Threat Intel - Lookout
Lookout
Press · 09 Sep 2025, 07:00 · A vulnerability in WhatsApp for iOS and Mac | Threat Intel - Lookout
SOC Prime
Press · 02 Sep 2025, 07:00 · CVE-2025-55177: Vulnerability in WhatsApp iOS & macOS Messaging Clients Exploited for Zero-Click Attacks - SOC Prime
The Record from Recorded Future News
Press · 02 Sep 2025, 07:00 · WhatsApp, Apple warn of highly targeted attacks with zero-day vulnerability - The Record from Recorded Future News
SecurityWeek
Press · 02 Sep 2025, 07:00 · WhatsApp Zero-Day Exploited in Attacks Targeting Apple Users - SecurityWeek
The Hacker News
Press · 30 Aug 2025, 07:00 · WhatsApp Patches Zero-Click Exploit Targeting iOS and macOS Devices - The Hacker News
BleepingComputer
Press · 29 Aug 2025, 07:00 · WhatsApp patches vulnerability exploited in zero-day attacks - BleepingComputer
SOC Prime
Press · 28 Aug 2025, 07:00 · CVE-2025-7775 Vulnerability: A New Critical NetScaler RCE Zero-Day Under Active Exploitation - SOC Prime
Dark Reading
Press · 22 Aug 2025, 07:00 · Apple Fixes Zero Day Used in 'Sophisticated' Attack - Dark Reading
The Record from Recorded Future News
Press · 22 Aug 2025, 07:00 · CISA warns of Apple zero-day used in targeted cyberattacks - The Record from Recorded Future News
SecurityWeek
Press · 21 Aug 2025, 07:00 · Apple Patches Zero-Day Exploited in Targeted Attacks - SecurityWeek
The Hacker News
Press · 21 Aug 2025, 07:00 · Apple Patches CVE-2025-43300 Zero-Day in iOS, iPadOS, and macOS Exploited in Targeted Attacks - The Hacker News
CyberScoop
Press · 21 Aug 2025, 07:00 · Apple discloses actively exploited zero-day affecting iOS, iPadOS and macOS - CyberScoop
SOC Prime
Press · 21 Aug 2025, 07:00 · CVE-2025-43300 Vulnerability: Zero-Day in iOS, iPadOS, and macOS Under Active Exploitation - SOC Prime
Hong Kong Computer Emergency Response Team Coordination Centre
Press · 21 Aug 2025, 07:00 · Apple Products Remote Code Execution Vulnerability - Hong Kong Computer Emergency Response Team Coordination Centre
Help Net Security
Press · 20 Aug 2025, 07:00 · Apple fixes zero-day vulnerability exploited in "extremely sophisticated attack" (CVE-2025-43300) - Help Net Security
LinkedIn
Press · 20 Aug 2025, 07:00 · Apple Emergency Patch Fixes Zero-Day Vulnerability Exploited In “Extremely Sophisticated Attack” - LinkedIn

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.8 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

2

Public exploit entries / repo candidates

See 2 repos with metrics
RepositoryStarsForksLanguageUpdated
hunters-sec/CVE-2025-4330011931Python24 Aug 2025, 16:15
Dark-life944/CVE-202510—24 Aug 2025, 16:15
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 10; EPSS 65.2%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:37.110490+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
20 Aug 2025, 07:00
Added to the CISA KEV catalog
21 Aug 2025, 00:00
Published
21 Aug 2025, 00:27
Latest press mention
01 Jan 2026, 08:00
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
2 repositories