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Researcher Releases FalconFlank PoC Showing Privilege Escalation in CrowdStrike Falcon
Researcher Chaotic Eclipse released FalconFlank, a zero-day privilege escalation PoC abusing CrowdStrike Falcon's Office macro remediation; CrowdStrike is investigating and issued a tech alert.
Researcher Chaotic Eclipse published FalconFlank, a proof-of-concept zero-day local privilege escalation in CrowdStrike Falcon Sensor that abuses the Microsoft Office malicious macros remediation feature, tested on fully updated Windows 11 25H2 and Windows Server 2025. CrowdStrike said it is investigating, advised disabling the Microsoft Office File Suspicious Macro Removal policy, and pointed customers to a FalconFlank tech alert, noting cloud anti-malware protection remains active. The article also covers related PoCs from the same researcher: HardBreacher against Kaspersky (fixed via update), ShieldBreak (CVE-2026-69414) against Microsoft Defender, an unpatched patch bypass of CVE-2026-50656, GreenSection against NVIDIA, and PrettyPrague against Avast, which Gen Digital patched in versions 26.7.11086 and 26.8.11125.
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Researcher Publishes CrowdStrike Privilege Escalation Zero Day
Researcher NightmareEclipse published FalconFlank, a zero-day local privilege escalation in CrowdStrike Falcon Sensor abusing its Office malicious macro remediation feature.
A researcher known as Nightmare Eclipse published details of FalconFlank, a zero-day privilege escalation that abuses the Microsoft Office malicious macro removal feature in CrowdStrike Falcon Sensor, verified working on fully updated Windows 11 25H2 and Windows Server 2025 with Falcon Phase 3 Optimal Protection. CrowdStrike urged customers to disable the Office File Suspicious Macro Removal policy while it investigates, noting customers remain protected via Cloud Anti-malware for Microsoft Office Files; no CVE has been assigned. The same researcher previously released the Exploitarium dump of over 30 PoC exploits, and researcher Kevin Beaumont confirmed FalconFlank works.
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ZDI-26-686: Linux Kernel nftables Race Condition Local Privilege Escalation Vulnerability
ZDI discloses CVE-2026-74565, a CVSS 7.8 nftables race condition letting local low-privileged attackers escalate privileges on Linux.
ZDI-26-686 describes a race condition in the Linux Kernel nftables subsystem that allows local attackers to escalate privileges. Exploitation requires the ability to execute low-privileged code on the target system. ZDI assigned a CVSS rating of 7.8 and CVE-2026-74565.
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ZDI-26-565: Gen Digital CCleaner Link Following Local Privilege Escalation Vulnerability
A link-following flaw (CVE-2026-12410, CVSS 7.8) in Gen Digital CCleaner allows local privilege escalation after low-privileged code execution.
ZDI advisory ZDI-26-565 details a link following vulnerability in Gen Digital CCleaner that permits local privilege escalation. An attacker must first be able to run low-privileged code on the affected installation. ZDI rated the issue 7.8 on CVSS and assigned CVE-2026-12410.
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ZDI-26-577: Trend Micro VPN OpenSSL Configuration Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
ZDI disclosed a local privilege escalation (CVE-2026-67212, CVSS 7.0) in Trend Micro VPN's OpenSSL configuration, requiring prior low-privileged code execution.
The Zero Day Initiative published advisory ZDI-26-577 describing an uncontrolled search path element vulnerability in Trend Micro VPN's OpenSSL configuration. Local attackers who can already execute low-privileged code on an affected installation can escalate privileges. ZDI rated the issue 7.0 on CVSS and assigned CVE-2026-67212.
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ZDI-26-708: (0Day) Microsoft Windows HTTP Proxy Privilege Escalation Vulnerability
ZDI disclosed an unpatched local privilege escalation flaw (CVSS 5.3) in Microsoft Windows HTTP Proxy, requiring prior low-privileged code execution.
ZDI-26-708 details a privilege escalation vulnerability in the Microsoft Windows HTTP Proxy component. A local attacker who can already execute low-privileged code on the target system can escalate privileges. ZDI assigned a CVSS rating of 5.3 and published it as a 0day advisory; no CVE id is listed in the bulletin text.
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ZDI-26-691: Linux Kernel Netlink-based Wireless Configuration Integer Overflow Local Privilege Escalation Vulnerability
ZDI-26-691: integer overflow in Linux kernel netlink wireless configuration (CVE-2026-53182) allows local privilege escalation by attackers already running high-privileged code; CVSS 8.2.
ZDI advisory ZDI-26-691 discloses an integer overflow in the Linux kernel's netlink-based wireless configuration that allows local attackers to escalate privileges on affected installations. Exploitation requires the attacker to first obtain the ability to execute high-privileged code on the target system. ZDI assigned a CVSS rating of 8.2 and CVE-2026-53182.
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ZDI-26-539: (Pwn2Own) Microsoft Windows ipt.sys Incorrect Permission Assignment Local Privilege Escalation Vulnerability
ZDI advisory discloses Windows ipt.sys local privilege escalation (CVE-2026-65773, CVSS 7.8) demonstrated at Pwn2Own.
ZDI advisory ZDI-26-539 describes an incorrect permission assignment flaw in Microsoft Windows ipt.sys, tracked as CVE-2026-65773 with a CVSS score of 7.8. A local attacker who can already execute low-privileged code can exploit it to escalate privileges. The vulnerability was demonstrated at Pwn2Own.
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ZDI-26-571: Linux Kernel Net Scheduler Packet Classifier API Use-After-Free Local Privilege Escalation Vulnerability
ZDI disclosed a use-after-free local privilege escalation flaw (CVE-2026-64530) in the Linux Kernel net scheduler packet classifier API.
The Zero Day Initiative published ZDI-26-571 describing a use-after-free in the Linux Kernel net scheduler packet classifier API. Local attackers who can already execute low-privileged code can escalate privileges. ZDI assigned a CVSS score of 8.8 and the identifier CVE-2026-64530.
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ZDI-26-531: SonicWall GMS Virtual Appliance interface Command Injection Local Privilege Escalation Vulnerability
ZDI discloses CVE-2026-66148, a command injection local privilege escalation in SonicWall GMS Virtual Appliance rated CVSS 7.8.
ZDI-26-531 describes a command injection vulnerability in the SonicWall GMS Virtual Appliance interface that allows local attackers to escalate privileges. Exploitation requires the attacker to first execute low-privileged code on the target system. ZDI assigned a CVSS score of 7.8, tracked as CVE-2026-66148.
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ZDI-26-554: Parallels RAS Client RDP Backend Service Exposed Dangerous Function Local Privilege Escalation Vulnerability
ZDI advisory discloses Parallels RAS Client RDP backend service local privilege escalation (CVE-2026-13121, CVSS 7.8).
ZDI advisory ZDI-26-554 describes an exposed dangerous function vulnerability in the RDP backend service of Parallels RAS Client, tracked as CVE-2026-13121 with a CVSS score of 7.8. Local attackers with the ability to execute low-privileged code can escalate privileges on affected installations.
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ZDI-26-530: SonicWall Email Security snmp Command Injection Local Privilege Escalation Vulnerability
ZDI advisory discloses SonicWall Email Security snmp command injection local privilege escalation (CVE-2026-66150, CVSS 7.8).
ZDI advisory ZDI-26-530 describes a command injection vulnerability in the snmp component of SonicWall Email Security, tracked as CVE-2026-66150 with a CVSS score of 7.8. Local attackers who can already execute low-privileged code on the target can escalate privileges on affected installations.
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ZDI-26-542: Microsoft Windows UMPDDrvBitBlt Improper Object Management Local Privilege Escalation Vulnerability
ZDI discloses CVE-2026-62712, a CVSS 7.8 Windows UMPDDrvBitBlt improper object management flaw allowing local attackers to escalate privileges.
ZDI advisory ZDI-26-542 describes improper object management in Microsoft Windows' UMPDDrvBitBlt function, tracked as CVE-2026-62712 with a CVSS score of 7.8. The flaw allows local attackers to escalate privileges on affected Windows installations. Exploitation requires first obtaining the ability to execute low-privileged code on the target system.
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ZDI-26-655: PAPPL Printer IPP Processing Stack-based Buffer Overflow Local Privilege Escalation Vulnerability
ZDI-26-655: Stack-based buffer overflow in PAPPL printer IPP processing enables local privilege escalation, rated CVSS 7.8.
The Zero Day Initiative published advisory ZDI-26-655 for PAPPL. A stack-based buffer overflow in printer IPP processing allows local attackers to escalate privileges after obtaining low-privileged code execution. ZDI assigned a CVSS 7.8 rating. No CVE identifier was listed in the advisory text.
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ZDI-26-568: Linux Kernel Net Scheduler Race Condition Local Privilege Escalation Vulnerability
ZDI disclosed a race condition (CVSS 7.5) in the Linux kernel net scheduler enabling local privilege escalation; no CVE assigned in the advisory text.
ZDI advisory ZDI-26-568 describes a race condition in the Linux kernel's net scheduler that allows local attackers to escalate privileges on affected installations. Exploitation requires the attacker to first execute high-privileged code on the target system. ZDI assigned a CVSS rating of 7.5; no CVE identifier is listed in the advisory text.
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ZDI-26-609: Linux Kernel Net Scheduler Packet Classifier Use-After-Free Local Privilege Escalation Vulnerability
The Linux kernel net scheduler packet classifier has a use-after-free (CVSS 7.8) allowing local attackers to escalate privileges from low-privileged code.
ZDI-26-609 describes a use-after-free vulnerability in the Linux kernel's network scheduler packet classifier, with a CVSS score of 7.8. An attacker must first be able to execute low-privileged code on the target system before escalating privileges. The advisory text does not list an assigned CVE identifier.
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ZDI-26-652: TrendAI Apex One Security Agent Cache Mechanism Time-Of-Check Time-Of-Use Local Privilege Escalation Vulnerability
ZDI-26-652: TOCTOU race in Trend Micro Apex One cache mechanism, CVE-2025-71416, enables local privilege escalation, rated CVSS 7.8.
The Zero Day Initiative published advisory ZDI-26-652 for the Trend Micro Apex One Security Agent. A time-of-check time-of-use (TOCTOU) flaw in the cache mechanism, tracked as CVE-2025-71416, allows local attackers to escalate privileges after gaining low-privileged code execution. ZDI assigned a CVSS 7.8 rating. A vendor patch is available for affected installations.
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ZDI-26-623: Linux Kernel IPv6 Multicast Routing Use-After-Free Local Privilege Escalation Vulnerability
ZDI-26-623 details a use-after-free in Linux kernel IPv6 multicast routing enabling local privilege escalation, rated CVSS 8.8.
The Zero Day Initiative published ZDI-26-623 describing a use-after-free vulnerability in the Linux kernel's IPv6 multicast routing implementation. A local attacker who can execute low-privileged code on an affected installation can exploit the flaw to escalate privileges. ZDI assigned a CVSS rating of 8.8; the advisory does not name a CVE id or state that exploitation has been observed.
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ZDI-26-647: VMware Workstation VMXNET3 TSO Segmentation Integer Overflow Local Privilege Escalation Vulnerability
ZDI disclosed an integer overflow in VMware Workstation's VMXNET3 TSO code (CVE-2026-59346) enabling local privilege escalation.
Zero Day Initiative published ZDI-26-647, a CVSS 7.5 integer overflow in the VMXNET3 TSO segmentation code of VMware Workstation. A local attacker who has already obtained the ability to execute high-privileged code on the guest system can exploit the flaw to escalate privileges on affected installations. The issue is tracked as CVE-2026-59346. No exploitation is reported in the advisory.
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ZDI-26-618: Microsoft Windows UMPDDrvStretchBlt Improper Object Management Local Privilege Escalation Vulnerability
ZDI disclosed CVE-2026-62712, a CVSS 7.8 Windows UMPDDrvStretchBlt improper object-management flaw enabling local privilege escalation.
Zero Day Initiative advisory ZDI-26-618 describes an improper object management issue in Microsoft Windows' UMPDDrvStretchBlt component. A local attacker who can already execute low-privileged code on the system can escalate privileges. The flaw carries a CVSS 3.0 rating of 7.8; details on affected versions and patch availability are limited in the advisory.
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ZDI-26-617: Microsoft Windows MIDI Service Incorrect Permission Assignment Local Privilege Escalation Vulnerability
ZDI disclosed CVE-2026-66804, a CVSS 7.8 incorrect permission assignment in Windows MIDI Service allowing local privilege escalation.
Zero Day Initiative advisory ZDI-26-617 details an incorrect permission assignment flaw in the Microsoft Windows MIDI Service. An attacker with the ability to run low-privileged code on an affected system can escalate privileges. ZDI rated the issue CVSS 7.8; the advisory provides no evidence of active exploitation.
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ZDI-26-536: (Pwn2Own) Microsoft Windows http.sys Integer Overflow Local Privilege Escalation Vulnerability
ZDI discloses CVE-2026-62735, a Pwn2Own-demonstrated Windows http.sys integer overflow (CVSS 8.8) enabling local privilege escalation.
ZDI advisory ZDI-26-536 describes an integer overflow in Microsoft Windows http.sys, tracked as CVE-2026-62735 with a CVSS score of 8.8. The flaw was demonstrated at Pwn2Own and allows local attackers to escalate privileges on affected Windows installations. Exploitation requires first obtaining the ability to execute low-privileged code on the target system.
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