Buffer Overflow
D-Link warns of max severity zero-day bug in DIR-822A routers
D-Link warned customers of a maximum-severity vulnerability (CVE-2026-86296) with public proof-of-concept (PoC) exploit code and no patch, affecting legacy DIR-822A dual-band Wi-Fi routers. This security flaw stems from a stack-based buffer overflow and improper data handling in the DHCP server component and can be exploited without authentication or user interaction. Attackers without valid credentials on […]
CISA orders feds to patch Zyxel flaw exploited for data theft
Attackers are now actively exploiting a high-severity vulnerability in Zyxel GS1900 series switches, according to the U.S. Cybersecurity and Infrastructure Security Agency (CISA). The flaw (tracked as CVE-2026-7273) stems from a stack-based buffer overflow in the CGI program that lets threat actors without privileges on the local area network (LAN) execute OS commands via maliciously […]
New Check Point flaw lets hackers execute code with root privileges
Check Point Software has released security updates to address a critical vulnerability that can let attackers execute code with root privileges on management systems. Tracked as CVE-2026-91843, this flaw stems from a stack-based buffer overflow weakness in the login process for Security Management Server instances, which manage Security Gateways (firewalls) and monitor network security events. […]
Flaw in Grandstream VoIP phones allows stealthy eavesdropping
A critical vulnerability in Grandstream GXP1600 series VoIP phones allows a remote, unauthenticated attacker to gain root privileges and silently eavesdrop on communications. VoIP communication equipment from Grandstream Networks is being used by small and medium businesses. The maker’s GXP product line is part of the company’s high-end offering for businesses, schools, hotels, and Internet Telephony Service Providers (ITSP) around the […]
Synology fixes BeeStation zero-days demoed at Pwn2Own Ireland
Synology has addressed a critical-severity remote code execution (RCE) vulnerability in BeeStation products that was demonstrated at the recent Pwn2Own hacking competition. The security issue (CVE-2025-12686) is described as a ‘buffer copy without checking the size of input’ problem, and can be exploited to allow arbitrary code execution. It impacts multiple versions of BeeStation OS, the […]
New TP-Link zero-day surfaces as CISA warns other flaws are exploited
TP-Link has confirmed the existence of an unpatched zero-day vulnerability impacting multiple router models, as CISA warns that other router flaws have been exploited in attacks. The zero-day vulnerability was discovered by independent threat researcher Mehrun (ByteRay), who noted that he first reported it to TP-Link on May 11, 2024. The Chinese networking equipment giant confirmed to […]
Ivanti fixes three critical flaws in Connect Secure & Policy Secure
Ivanti has released security updates for Ivanti Connect Secure (ICS), Ivanti Policy Secure (IPS), and Ivanti Secure Access Client (ISAC) to address multiple vulnerabilities, including three critical severity problems. The company learned about the flaws through its responsible disclosure program from security researchers at CISA and Akamai, and through the HackerOne bug bounty platform. Ivanti […]