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U.S. CISA adds Fortinet Multiple Products and BeyondTrust Remote Support flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Fortinet Multiple Products and BeyondTrust Remote Support flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: This week, Palo Alto Netwoks researchers reported that PEERSTITCH malware exploited FortiManager to expose 500+ firewalls, […]

BeyondTrust Remote Support Zero-Day Continues Trend of Exploited Edge Bugs

Ivanti, Cisco, and Palo Alto Networks all had vulnerabilities in edge devices come under fire this week. Now BeyondTrust joins the group.

CVE-2026-102551 & CVE-2026-102552 - Issue with FreeRTOS-Plus-TCP

Bulletin ID: 2026-139-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/16/2026 10:15 AM PDT Description: FreeRTOS-Plus-TCP is an open-source, thread-safe TCP/IP stack for the FreeRTOS kernel, distributed by Amazon for use on embedded and IoT devices. AWS identified two issues with FreeRTOS-Plus-TCP, affecting multiple versions. CVE-2026-102551: improper verification of the source of a communication channel in the IPv6 Router Advertisement handler. The handler doe…

PEERSTITCH malware: How Attackers Compromised 500 Firewalls Through FortiManager

PEERSTITCH malware exploited FortiManager to expose 500+ firewalls, evade detection inside FortiOS memory, and maintain stealthy access. PEERSTITCH, a stealthy implant deployed during a prolonged intrusion, helped attackers maintain access to a telecom managed service provider after compromising its FortiManager appliance. Palo Alto Networks Unit 42 documented the operation, which began in September 2024 and […]

PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions

A suspected advanced threat actor has been observed exploiting a security flaw in Fortinet FortiOS to deliver a previously unreported memory-resident ARM64 malware known as PEERSTITCH. The attack involves the exploitation of CVE-2025-61624 (CVSS score: 5.4), a path traversal flaw in the command line interpreter of FortiOS, FortiPAM, FortiProxy, and FortiSwitchManager that could allow a

Palo Alto Networks Patches PAN-OS Authenticated RCE Flaw Amid Active Exploitation

Palo Alto Networks on Wednesday issued security updates for a high-severity flaw in PAN-OS software that has come under active exploitation. The vulnerability, tracked as CVE-2026-0322 (CVSS score: 8.6), is a case of remote code execution in the management interface. "A remote code execution (RCE) vulnerability in the management interface of Palo Alto Networks PAN-OS software enables an

ZDI-26-772: Fortinet FortiSandbox Admin Profile Improper Handling of Exceptional Conditions Denial-of-Service Vulnerability

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Fortinet FortiSandbox. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 4.9. The following CVEs are assigned: CVE-2026-106170.

ZDI-26-771: Fortinet FortiSandbox login_user_profile Hard-Coded Credentials Authentication Bypass Vulnerability

This vulnerability allows remote attackers to bypass authentication on affected installations of Fortinet FortiSandbox. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.3. The following CVEs are assigned: CVE-2026-107656.

Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant

We investigated an intrusion where attackers exploited CVE-2024-47575 to target 500+ firewalls and deploy PEERSTITCH, a memory-resident ARM64 malware. The post Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant appeared first on Unit 42.

Issue with FreeRTOS-Plus-TCP - IPv6 Router Advertisement Memory Safety Issues

Cisco Advance Notification for Publication of October 21, 2026, Security Advisories

On October 21, 2026, the Cisco Product Security Incident Response Team (PSIRT) will publish advisories to disclose security vulnerability information along with fixed software releases for the following Cisco products: Expressway Series (security hardening release) IOS XR Software for ASR 9000 Series Routers Secure Client Snort (security hardening release) Unified Communications products (security hardening release) To remediate vulnerabilities to be disclosed on October 21, 2026, Cisco strongl…

Microsoft fixes VPN issues caused by September Windows updates

Microsoft has resolved a known issue that caused Always On VPN connection issues after installing the September 2026 Windows 11 security updates. [...]

Volexity Uncovers Stealthy Ivanti VPN Attack Using Three Zero-Day Vulnerabilities

Ivanti VPN zero-days let attackers gain root access, steal credentials, evade detection, and prepare for wider network compromise. On October 5, Volexity started investigating suspicious activity at one of its monitoring customers and traced everything back to an Ivanti Connect Secure VPN appliance running version 22.8R2.4, the latest build available at the time. Three chained […]

Citrix, Fortinet, Ivanti Patch 29 Vulnerabilities Across Their Products

Critical-severity flaws could lead to authentication bypass, code execution, and sensitive authentication information leaks. The post Citrix, Fortinet, Ivanti Patch 29 Vulnerabilities Across Their Products appeared first on SecurityWeek.

Fake WatchGuard VPN Site Steals Credentials

A fake WatchGuard VPN download site steals SSL VPN credentials, then serves the real signed client. Learn how it works and how to spot it.

Attacker Chains Three Ivanti Connect Secure Zero-Days for Root Access, Only Two Patched So Far

An attacker chained three zero-day flaws in Ivanti Connect Secure, a VPN appliance, to run commands as root without logging in, security firm Volexity said on October 13. Ivanti has released fixes for two of the flaws and told customers on affected versions to "act immediately." A fix for the third is still pending, according to Volexity. Volexity, which reported the flaws to Ivanti,

The MFA Gaps Attackers are Still Exploiting

Attackers continue exploiting gaps in MFA coverage, using stolen credentials to access VPNs, RDP, and Windows systems that still rely on passwords alone. Specops explains why protecting cloud applications isn't enough and how organizations can close these authentication gaps. [...]

Let’s Encrypt Cuts Default Certificate Validity to 64 Days Ahead of 45-Day Switch

Beginning February 2027, all newly issued certificates will have a 64-day validity period by default. The post Let’s Encrypt Cuts Default Certificate Validity to 64 Days Ahead of 45-Day Switch appeared first on SecurityWeek.

TP-Link Sued by Four More U.S. States Over Router Security and China Ties

Four more U.S. states sued router maker TP-Link Systems on October 6, bringing the total to five, with Texas filing a suit in February. Florida, Iowa, Montana and Nebraska allege the California company misled buyers about how secure its routers are and how separate it is from China. TP-Link denies the claims and says it will fight them in court. TP-Link Systems is based in

Cisco warns of critical flaws allowing Nexus switch takeover

Cisco released security advisories for five critical vulnerabilities in its NX-OS data center network operating system that could be exploited to run arbitrary code with root privileges on Nexus switches. [...]

Thousands of cheap Android phones shipped with ad-fraud malware

"It’s on the phone before the owner switches it on for the first time, and it can’t be uninstalled," researchers at Bitdefender said about ad fraud malware found on thousands of cheap Android devices.

Inside the Exchange Inspector: How Tenable uses OpenAI GPT cyber models to review open-source AI agents

Community-built AI agents, skills, and MCP servers are landing in SOC workflows fast. Here’s what the Exchange Inspector tests before a listing earns its vetted tag on the CyberAgents Exchange. Three tools have already passed.Key takeawaysEvery Inspector-vetted listing clears three gates: an automated check, a frontier model assessment, and human verification. Tenable uses Tenable One AI Exposure to screen for prompt injection and exposed secrets, and OpenAI GPT Cyber models to assess the code …

TP-Link Faces State Lawsuits and New Scrutiny Over ISP Router Flaws

SEC Consult has published technical details on vulnerabilities mentioned in a complaint filed by several US states. The post TP-Link Faces State Lawsuits and New Scrutiny Over ISP Router Flaws appeared first on SecurityWeek.

FortiBleed Attackers Locking Victims Out of Fortinet Devices

Attackers are creating new accounts and deleting existing ones and passwords to prevent legitimate access. The post FortiBleed Attackers Locking Victims Out of Fortinet Devices appeared first on SecurityWeek.

FBI: Ongoing FortiBleed attacks lock out FortiGate VPN admins

The FBI is warning that FortiBleed attacks are still ongoing, targeting exposed Fortinet FortiGate firewalls and SSL VPN gateways and locking out legitimate administrators. [...]