New Mistic Backdoor Linked to KongTuke in ClickFix and ModeloRAT Campaigns

A new, stealthy backdoor named Mistic has been deployed as part of suspected financially motivated attacks aimed at multiple organizations spanning insurance, education, IT, and professional services sectors since April 2026. According to Symantec and Carbon Black's Threat Hunter Team, the...

CVE-2026-53249 ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options

In the Linux kernel, the following vulnerability has been resolved: ipv4: restrict IPOPTSSRR and IPOPTLSRR options This patch restricts setting Loose Source and Record Route LSRR and Strict Source and Record Route SSRR IP options to users with CAPNETRAW capability. This prevents unprivileged...

CVE-2026-53249 ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options

In the Linux kernel, the following vulnerability has been resolved: ipv4: restrict IPOPTSSRR and IPOPTLSRR options This patch restricts setting Loose Source and Record Route LSRR and Strict Source and Record Route SSRR IP options to users with CAPNETRAW capability. This prevents unprivileged...

CVE-2026-53240 xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free on firstskb in inputprocesspayload inputprocesspayload stores firstskb into xtfs-ranewskb under droplock when starting partial reassembly, then unlocks and breaks out of the processing loop. The...

CVE-2026-33543

FOSSBilling versions 0.7.2 and earlier expose a guest API endpoint /api/guest/staff/create intended for initial admin bootstrap. A flawed admin-existence check (is_countable() used on a Model_Admin object or null) makes the guard always evaluate true, allowing unauthenticated creation of an admin...

CVE-2026-53077

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces...

CVE-2026-53077

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces...

CVE-2026-53077 net/rds: Restrict use of RDS/IB to the initial network namespace

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces...

EUVD-2026-38945

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces...

CVE-2026-53077

The vulnerability CVE-2026-53077 affects the Linux kernel RDS/IB code: it restricted usage to the initial network namespace, with the non-initial namespaces not supported and the existing code likely malfunctioning. Multiple advisories note the issue has been resolved/patched (e.g., Debian/Ubuntu...

CVE-2026-53077 net/rds: Restrict use of RDS/IB to the initial network namespace

In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces...

PT-2026-51971

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the net/rds component where the RDS/IB Reliable Datagram Sockets over InfiniBand code does not function correctly when used in network namespaces other than the initia...

Dismantling FortiBleed: Inside a Russian Fortinet Compromise Operation

SOCRadar Threat Research Unit STRU has reported FortiBleed, a large-scale credential-harvesting operation targeting more than 430,000 FortiGate firewalls globally. The investigation also confirmed the breach of a NATO-aligned defense contractor. Based on the observed activity, the threat actor is...

FortiBleed Targeted FortiGate Firewalls in 110 Million-Credential Harvesting Operation

A Russian-speaking initial access broker IAB driven by financial gain is assessed to be behind a large-scale credential-harvesting operation known as FortiBleed that has targeted over 430,000 FortiGate firewalls globally. The campaign, active since February 2026, involves collecting credential...

CVE-2026-54018

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, the SafePlaywrightURLLoader implements a validateurl function to prevent SSRF attacks by checking the IP address of the user-provided URL. However, this validation is performed only ...

dovecot security update

1:2.3.16-18 - rebuild 1:2.3.16-17 - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161640 - fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command RHEL-162288 - fix CVE-2026-27857: denial of service via...

kernel: nvmet-tcp: fix race between ICReq handling and queue teardown

A flaw was found in the Linux kernel's NVMe over TCP nvmet-tcp implementation. A race condition exists between the handling of an Initialization Connection Request ICReq and the teardown of a queue. A remote attacker, by sending an ICReq and immediately closing the connection, could trigger a...

CVE-2026-56074

PraxionAI before 1.5.128 caches tool approval decisions by tool name rather than invocation arguments, enabling bypass of approval prompts for subsequent execute_command calls. Attackers could obtain initial approval for a benign command and then exfiltrate API keys and credentials via later shel...

DragonForce Hackers Abuse Microsoft Teams Relays to Hide Backdoor.Turn C2 Traffic

Threat actors associated with the DragonForce ransomware have been observed using a custom Go-based remote access trojan RAT called Backdoor.Turn to conceal command-and-control C2 traffic inside Microsoft Teams relay infrastructure. According to findings from Broadcom-owned Symantec and Carbon...

CVE-2026-54445 Vantage6: Set admin user and password from environment or configuration

vantage6 is an open-source infrastructure for privacy preserving analysis. Versions prior to 5.0.0 provide an initial user with username root and password root. This is not ideal because attackers know that almost all vantage6 servers have a user with username root that probably has admin rights,...