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#Zero-Day

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HIGH
Vulnerabilities

CVE-2026-43284: 'Dirty Frag' Linux Vulnerability Exploited — Patch Now

Analysis of the 'Dirty Frag' (Copy Fail 2) Linux kernel vulnerabilities CVE-2026-43284 and CVE-2026-43500, which enable potential remote code execution.

Runtime Rebel Intel
4 min read · May 11, 2026
CRITICAL
Vulnerabilities

Ivanti EPMM CVE-2023-35078 Zero-Day: Urgent CISA Patch Directive

CISA orders federal agencies to patch Ivanti EPMM CVE-2023-35078 within four days following active zero-day exploitation against government networks.

Runtime Rebel Intel
3 min read · May 8, 2026
HIGH
Vulnerabilities

Dirty Frag: Linux Kernel Zero-Day Enables Local Privilege Escalation

The Dirty Frag zero-day vulnerability allows local attackers to gain root access on major Linux distributions via an exploit in kernel fragmentation handling.

Runtime Rebel Intel
4 min read · May 8, 2026
HIGH
Vulnerabilities

CVE-2023-35081: Ivanti EPMM Remote Code Execution Zero-Day Analysis

Ivanti warns of a high-severity RCE vulnerability in EPMM exploited in zero-day attacks. Secure your systems by patching CVE-2023-35081 today.

Runtime Rebel Intel
3 min read · May 7, 2026
Microsoft Edge Plaintext Password Exposure and ICS Zero-Day Risks
CRITICAL
Threat Intel

Microsoft Edge Plaintext Password Exposure and ICS Zero-Day Risks

Analysis of Microsoft Edge plaintext password storage risks, newly disclosed ICS zero-day vulnerabilities, and Telegram-based data exfiltration TTPs.

Runtime Rebel Intel
3 min read · May 7, 2026
CRITICAL
Vulnerabilities

CVE-2026-0300: Critical Zero-Day in PAN-OS Captive Portal Service

Palo Alto Networks warns of CVE-2026-0300, a critical zero-day vulnerability in the PAN-OS Captive Portal service currently being exploited in the wild.

Runtime Rebel Intel
4 min read · May 6, 2026

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CRITICAL
Vulnerabilities

CVE-2026-41940: Active Zero-Day Exploitation in cPanel and WHM

Critical zero-day CVE-2026-41940 in cPanel and WHM allows for authentication bypass. Learn about active exploitation, public PoCs, and essential patch guidance.

Runtime Rebel Intel
3 min read · Apr 30, 2026
CRITICAL
Vulnerabilities

CVE-2024-23296: Apple Patches Actively Exploited Notification Flaw

Apple releases urgent security updates for iOS and iPadOS to address CVE-2024-23296, a memory corruption vulnerability in Notification Services seeing active use.

Runtime Rebel Intel
3 min read · Apr 23, 2026
CRITICAL
Vulnerabilities

CVE-2024-38107: Microsoft Defender BlueHammer Flaw Exploited - Patch Now

CISA orders federal agencies to patch the BlueHammer zero-day, a critical Microsoft Defender privilege escalation flaw currently under active exploitation.

Runtime Rebel Intel
4 min read · Apr 23, 2026
Anthropic Project Glasswing: The Shift to AI-Driven Zero-Day Discovery
MEDIUM
Vulnerabilities

Anthropic Project Glasswing: The Shift to AI-Driven Zero-Day Discovery

Anthropic delays Project Glasswing after its AI model identifies critical zero-day vulnerabilities across major tech stacks, sparking a massive patching effort.

Runtime Rebel Intel
4 min read · Apr 23, 2026
CRITICAL
Vulnerabilities

CVE-2024-21412: Microsoft Defender Zero-Day Exploitation and Analysis

Analysis of a Microsoft Defender zero-day vulnerability used to extract NTLM hashes from the SAM database and achieve system-level privileges.

Runtime Rebel Intel
3 min read · Apr 23, 2026
Microsoft Defender Zero-Days BlueHammer and RedSun Actively Exploited
CRITICAL
Vulnerabilities

Microsoft Defender Zero-Days BlueHammer and RedSun Actively Exploited

Huntress warns of active exploitation of three Microsoft Defender vulnerabilities, including BlueHammer and RedSun, allowing for privilege escalation.

Runtime Rebel Intel
4 min read · Apr 17, 2026
INFO
Threat Intel

Claude Mythos Preview: Anthropic Limits Access to Vulnerability AI

Anthropic restricts Claude Mythos Preview access to critical infrastructure providers due to its advanced capability to exploit zero-day vulnerabilities.

Runtime Rebel Intel
3 min read · Apr 17, 2026
Microsoft Defender Zero-Day and 17-Year-Old Excel RCE Exploitation
HIGH
Threat Intel

Microsoft Defender Zero-Day and 17-Year-Old Excel RCE Exploitation

Analysis of recent threats including a Microsoft Defender zero-day, SonicWall brute-force campaigns, and critical RCE in legacy Microsoft Excel components.

Runtime Rebel Intel
4 min read · Apr 16, 2026
SharePoint Zero-Day Fixed in Microsoft April 2026 Security Updates
CRITICAL
Vulnerabilities

SharePoint Zero-Day Fixed in Microsoft April 2026 Security Updates

Microsoft addresses 169 vulnerabilities, including an actively exploited SharePoint zero-day. Learn how to secure your environment against these flaws.

Runtime Rebel Intel
3 min read · Apr 15, 2026
Microsoft Patch Update: Zero-Day Privilege Elevation Dominates
HIGH
Vulnerabilities

Microsoft Patch Update: Zero-Day Privilege Elevation Dominates

Microsoft's latest patch update addresses 165 vulnerabilities, with over half being privilege elevation flaws, including two actively exploited zero-days.

Runtime Rebel Intel
4 min read · Apr 15, 2026
CRITICAL
Vulnerabilities

April 2026 Patch Tuesday: SharePoint Zero-Day, BlueHammer, & Adobe RCE

Microsoft's April 2026 Patch Tuesday addresses 167 vulnerabilities, including a SharePoint Server zero-day, Windows Defender 'BlueHammer' flaw, and an actively exploited…

Runtime Rebel Intel
5 min read · Apr 15, 2026
CRITICAL
Vulnerabilities

Windows 10 KB5082200 ESU: Patching April 2026 Zero-Day Flaws

Microsoft addresses two critical zero-days in the Windows 10 KB5082200 Extended Security Update. Learn how to secure EOL systems against active exploitation.

Runtime Rebel Intel
3 min read · Apr 14, 2026
Cisco FMC Zero-Day Exploited by Interlock Ransomware: March 2026 CVEs
CRITICAL
Vulnerabilities

Cisco FMC Zero-Day Exploited by Interlock Ransomware: March 2026 CVEs

Runtime Rebel analyzes March 2026's significant rise in high-impact CVEs, including a Cisco FMC zero-day actively exploited by Interlock Ransomware.

Runtime Rebel Intel
4 min read · Apr 14, 2026
Adobe Acrobat & Reader Zero-Day Exploitation: Immediate Patch Required
CRITICAL
Vulnerabilities

Adobe Acrobat & Reader Zero-Day Exploitation: Immediate Patch Required

Adobe has patched an actively exploited Zero-Day in Acrobat and Reader. Attackers used crafted PDF files for at least four months. Update immediately.

Runtime Rebel Intel
4 min read · Apr 14, 2026
CRITICAL
Vulnerabilities

CVE-2026-34621: Adobe Acrobat and Reader Zero-Day Emergency Patch

Adobe issues an emergency fix for CVE-2026-34621, a critical Acrobat and Reader zero-day exploited in the wild. Learn technical details and mitigation steps.

Runtime Rebel Intel
3 min read · Apr 13, 2026
Anthropic Mythos Preview Exploits OS Zero-Days: Addressing the Response Gap
HIGH
Threat Intel

Anthropic Mythos Preview Exploits OS Zero-Days: Addressing the Response Gap

Anthropic restricts Mythos Preview after it autonomously exploits OS zero-days. Learn how to minimize post-alert gaps as breakout times drop to 29 minutes.

Runtime Rebel Intel
4 min read · Apr 13, 2026
CRITICAL
Vulnerabilities

CVE-2026-34621: Adobe Reader Zero-Day Exploited for Months Patched

Adobe releases critical updates for CVE-2026-34621, an Acrobat and Reader zero-day used for remote code execution. Patch immediately to prevent exploitation.

Runtime Rebel Intel
3 min read · Apr 12, 2026
BlueHammer Zero-Day: Windows Local Privilege Escalation Exploit Risks
HIGH
Vulnerabilities

BlueHammer Zero-Day: Windows Local Privilege Escalation Exploit Risks

Researcher Chaotic Eclipse released the BlueHammer zero-day exploit for Windows, enabling local privilege escalation. Learn how to detect and mitigate it.

Runtime Rebel Intel
4 min read · Apr 10, 2026