Signed, sealed, injected: The mechanics of DCRat in 2026

Signed, sealed, injected: The mechanics of DCRat in 2026 By Madhini Muralidharan, Shalaka Patil and Kaushal Sarda · August 13, 2026 Introduction In early 2026, the Trellix Advanced Research Center ARC identified and analyzed an active DarkCrystal RAT DCRat campaign following a critical customer...

CVE-2026-33922

A flaw was found in Arc. This path traversal vulnerability exists within the Offline archives functionality of the local web interface. A local user with administrative credentials can exploit this by submitting an archive name containing special characters, allowing them to delete arbitrary file...

EUVD-2026-55996

A path traversal vulnerability was discovered in the Offline archives functionality of the local web interface due to insufficient validation of an input parameter. A local user with administrative credentials for the web interface could submit an archive name containing traversal sequences and...

CVE-2026-33922 Path traversal in the Offline archives functionality of the local web interface in Arc before v2.7.0

A path traversal vulnerability was discovered in the Offline archives functionality of the local web interface due to insufficient validation of an input parameter. A local user with administrative credentials for the web interface could submit an archive name containing traversal sequences and...

CVE-2026-33922

CVE-2026-33922: Path traversal in the Offline archives feature of the Arc local web interface (Arc before v2.7.0). A local user with administrative Web UI credentials can submit an archive name containing traversal sequences to delete arbitrary files accessible to the Arc process, which runs with...

CVE-2026-33921 Npcap driver installed without administrator-only access restriction on Windows in Arc before v2.7.0

The Windows installer deployed Npcap leaving its access restriction option at the insecure default value, so the driver was accessible to every local user of the host instead of being restricted to administrators only. A local user without administrative privileges could use the Npcap driver to...

CVE-2026-33921

CVE-2026-33921 maps to a Windows RPC Runtime (rpcrt4.dll) vulnerability where NdrComplexTypeBufferSize underflows, enabling a pre-auth heap-based overflow (Ghost-Call) via RPC/SMB without credentials. Impact: potential remote code execution with SYSTEM privileges on affected Windows hosts; exploi...

PT-2026-70103

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description A path traversal vulnerability exists in the Offline archives functionality of the local web interface. This issue occurs because of insufficient validation of a...

Npcap driver installed without administrator-only access restriction on Windows in Arc before v2.7.0

Summary The Windows installer deployed Npcap leaving its access restriction option at the insecure default value, so the driver was accessible to every local user of the host instead of being restricted to administrators only. Impact A local user without administrative privileges could use the...

Path traversal in the Offline archives functionality of the local web interface in Arc before v2.7.0

Summary A path traversal vulnerability was discovered in the Offline archives functionality of the local web interface due to insufficient validation of an input parameter. Impact A local user with administrative credentials for the web interface could submit an archive name containing traversal...

Linux Distros Unpatched Vulnerability : CVE-2026-64587

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt...

SUSE CVE-2026-64587

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

CVE-2026-64587

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

UBUNTU-CVE-2026-64587

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

EUVD-2026-53774

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

CVE-2026-64587

The CVE-2026-64587 entry concerns the Linux kernel net: ethernet: arc: emac component. The root cause is a race where, if probe unwinds after devm_request_irq() has installed the handler, a stale or latched interrupt may reach arc_emac_intr() during teardown and race with net_device release. The ...

CVE-2026-64587 net: ethernet: arc: emac: quiesce interrupts before requesting IRQ

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

CVE-2026-64587

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen, so probe should not see interrupt delivery in the usual case. However, hardware may still present stale...

CVE-2026-64474

The CVE-2026-64474 issue affects the Linux kernel VFIO path, specifically vfio_mig_get_next_state() which walks vfio_from_fsm_table[] and could spin forever when encountering an ERROR sentinel (STOP_COPY arcs to ERROR). The root cause was an unaccounted ERROR sentinel in the skip loop, allowing a...

CVE-2026-64474

In the Linux kernel, the following vulnerability has been resolved: vfio: prevent infinite loop in vfiomiggetnextstate on blocked arc vfiomiggetnextstate walks vfiofromfsmtable one step at a time, looping to skip optional states the device does not support until nextfsm is supported. A blocked...