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network security

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Network security on WindowsForum.com covers a broad range of topics including Windows Server DNS over HTTPS encryption, Wi-Fi sharing safety in Windows 11, and critical vulnerabilities in network devices and routing software. Discussions highlight CISA advisories on AVer PTC cameras with CVSS 9.8 code execution flaws, Linux kernel bugs like CVE-2026-46331 and CVE-2026-46102 affecting network stacks, and FRRouting BGP FlowSpec denial-of-service issues. These threads emphasize the importance of securing network infrastructure, from enterprise DNS to edge devices, and provide practical guidance for Windows administrators to mitigate risks.
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    CVE-2026-46331: Linux pedit net/sched Bug Fix Prevents Page Cache Corruption

    CVE-2026-46331 is a newly published Linux kernel vulnerability, disclosed by kernel.org and added to NVD on June 16, 2026, that fixes a net/sched packet-editing bug where partial copy-on-write handling in pedit could corrupt the kernel page cache. The bug is narrow, deeply technical, and not yet...
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    • cve 2026-46331 linux kernel network security traffic control
    • Replies: 0
    • Forum: Security Alerts
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    CISA Warns: AVer PTC Cameras CVE-2026-40624 (CVSS 9.8) Can Enable Code Execution

    CISA published advisory ICSA-26-169-01 on June 18, 2026, warning that multiple AVer PTC camera models used worldwide in government, commercial, and healthcare environments are affected by CVE-2026-40624, a critical file and directory exposure vulnerability rated CVSS 9.8. The short version is...
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    • aver ptc cameras cve-2026-40624 network security windows vulnerability
    • Replies: 0
    • Forum: Security Alerts
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    Windows Server 2025 DNS over HTTPS: Encrypted Port 53 Resolution for Enterprises

    Windows Server 2025 gained production-ready DNS over HTTPS support for the Windows DNS Server service with Microsoft’s June 2026 security update, extending encrypted client-to-server DNS resolution to server environments that have long depended on clear-text port 53 traffic. That sounds like a...
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    • dns over https network security windows server 2025 zero trust
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    • Forum: Windows News
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    Windows Server 2025 DNS Over HTTPS (DoH) GA: Encrypt Internal DNS Queries

    Microsoft has moved DNS over HTTPS for Windows Server 2025’s DNS Server role into general availability with the June 9, 2026 cumulative update, giving enterprises a supported way to encrypt DNS queries between Windows clients and their own internal resolvers. The change sounds narrow, but it...
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    • active directory dns dns over https network security windows server 2025
    • Replies: 0
    • Forum: Windows News
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    Windows Server 2025 DNS over HTTPS (GA): Encrypt Internal Name Resolution

    Microsoft has made DNS over HTTPS support generally available for Windows DNS Server in Windows Server 2025 with the latest June 2026 Patch Tuesday updates, giving enterprise networks a Microsoft-supported way to encrypt DNS traffic between DoH-capable clients and their internal resolvers. The...
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    • active directory dns dns over https enterprise security network security pki certificates windows server windows server 2025 zero trust zero trust dns
    • Replies: 3
    • Forum: Windows News
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    Share Wi-Fi Safely with Windows 11 QR Codes and Saved Network Details

    Share Wi-Fi Safely with Windows 11 QR Codes and Saved Network Details Difficulty: Beginner | Time Required: 10 minutes Sharing your Wi-Fi password does not have to mean reading a long passphrase out loud, texting it around, or peeling the label off the bottom of your router. Recent Windows 11...
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    • network security wi-fi password wifi qr code sharing windows 11
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    • Forum: Windows Tutorials
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    CVE-2026-37457: FRRouting BGP FlowSpec Off-by-One DoS and Why Windows Teams Care

    CVE-2026-37457 is a high-severity denial-of-service flaw disclosed in May 2026 in FRRouting’s BGP FlowSpec handling, where a crafted FlowSpec component can trigger an off-by-one out-of-bounds write in bgp_flowspec_op_decode() within bgpd/bgp_flowspec_util.c. The bug is not a Windows...
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    • bgp flowspec cve-2026-37457 frrouting bgpd network security
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    • Forum: Security Alerts
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    CVE-2026-46102: Kernel Stream Parser Memory Leak Bug Fixed—DoS Risk

    Linux kernel maintainers disclosed CVE-2026-46102 on May 27, 2026, after fixing a stream parser bug in which aborted message assembly could leave a partially built socket buffer referenced and repeatedly leak memory. The flaw is not a flashy remote-code-execution headline, and NVD had not yet...
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    • denial of service linux kernel memory leak network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-46037: Linux IPv4 ICMP Extended Echo Reply OOB Lookup Fix Guide

    CVE-2026-46037 is a newly published Linux kernel flaw disclosed by kernel.org and NVD on May 27, 2026, affecting IPv4 ICMP handling where extended echo replies could drive an out-of-range lookup in the kernel’s icmp_pointers table before validation. The bug is small in code and large in...
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    • cve security icmp ipv4 linux kernel network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-43496: Linux RED + QFQ Traffic-Control Bug Causes Kernel Panic

    CVE-2026-43496 is a newly published Linux kernel vulnerability, disclosed through kernel.org and added to NVD on May 21, 2026, that fixes a traffic-control crash in the RED queueing discipline when nested under schedulers such as TBF and paired with QFQ children. The bug is not a Windows...
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    • cve-2026-43496 linux kernel network security traffic control
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-43465: mlx5e XDP multi-buffer accounting bug impacts Linux NIC security

    CVE-2026-43465 is a Linux kernel mlx5e network-driver flaw, published by NVD on May 8, 2026 and last modified on May 20, that affects Mellanox/NVIDIA mlx5 Ethernet receive paths when XDP multi-buffer programs reshape packet fragments under striding receive queues. The short version is less...
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    • linux kernel mlx5e driver network security xdp multi-buffer
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-20182 KEV Alert: Cisco SD-WAN Authentication Bypass Now Actively Exploited

    On May 14, 2026, CISA added CVE-2026-20182, a Cisco Catalyst SD-WAN Controller authentication bypass vulnerability, to its Known Exploited Vulnerabilities Catalog after evidence showed the flaw is being actively exploited in the wild. The move is not just another entry in a federal spreadsheet...
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    • authentication bypass cisa kev cisco sd-wan network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-32209 Patch Tuesday: WFP Security Feature Bypass Explained

    Microsoft disclosed CVE-2026-32209 on May 12, 2026, as a Windows Filtering Platform security feature bypass vulnerability in its May Patch Tuesday release, with public reporting so far confirming the CVE’s existence but offering little public detail about the underlying flaw. That is the story...
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    • cve-2026-32209 network security patch tuesday windows filtering platform
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    • Forum: Security Alerts
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    Windows Update Fails When Proxies, Firewalls, VPNs, or DNS Break TLS Trust

    Microsoft’s latest Windows Update guidance says devices that cannot scan, download, or validate updates are often being stopped by proxy, firewall, VPN, or DNS rules that fail to pass Microsoft’s update subdomains through untouched. The practical message is blunt: Windows Update is not just “web...
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    • dns filtering network security tls inspection windows update
    • Replies: 0
    • Forum: Windows News
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    CVE-2026-31420 Bridge MRP Zero Interval Can Panic Kernel

    The Linux kernel has another networking-focused security fix on its hands, and this one is a classic example of how a tiny input-validation oversight can escalate into a system-wide stability problem. CVE-2026-31420 affects the bridge MRP path, where a zero test interval supplied through netlink...
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    • bridge mrp linux kernel netlink validation network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-23442 SRv6 Kernel Bug: NULL idev Dereference in IPv6 Routing Paths

    CVE-2026-23442 is a small-looking Linux kernel fix with the kind of operational consequences that make networking teams sit up and take notice. The vulnerability centers on IPv6 Segment Routing over IPv6 (SRv6) paths, where the kernel can end up dereferencing a NULL idev pointer if the device...
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    • cve-2026-23442 ipv6 srv6 linux kernel network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-5107: FRR EVPN Type-2 access control flaw in bgp_evpn.c

    The reported CVE-2026-5107 in FRRouting’s FRR EVPN Type-2 route handling is notable because it points at a control-plane path that sits at the center of modern data-center overlays. According to the Microsoft Security Response Center entry, the issue is tied to bgp_evpn.c, specifically...
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    • bgp evpn evpn type-2 frrouting frr network security
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-23276: Linux Kernel Fix for Tunnel Recursion Loops in Bond Broadcast

    CVE-2026-23276 is a reminder that some of the most dangerous kernel bugs are not glamorous buffer overflows or obvious use-after-free defects, but control-flow problems that only emerge under very specific network topologies. In this case, the Linux kernel fix closes an infinite recursion path...
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    • bonding broadcast linux kernel network security tunnel recursion
    • Replies: 0
    • Forum: Security Alerts
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    Microsoft Launches MAI-Image-2 With Major Boost to AI Image Realism

    Microsoft’s MAI-Image-2 is shaping up as more than a routine model refresh; it looks like a strategic attempt to make AI image generation feel less synthetic, more useful, and more deeply embedded in Microsoft’s own ecosystem. The company is clearly aiming at a different end state than a flashy...
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    • browser troubleshooting cloudflare block network security windows report
    • Replies: 0
    • Forum: Windows News
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    CVE-2026-23154: Linux Kernel GSO/GRO Fraglist Forwarding Fix Explained

    This Linux kernel fix is a small patch with an outsized networking lesson: when packet forwarding meets Generic Receive Offload and Generic Segmentation Offload, tiny assumptions about packet layout can turn into real-world throughput problems. CVE-2026-23154 tracks a fraglist forwarding bug in...
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    • cve-2026-23154 linux kernel network security packet forwarding
    • Replies: 0
    • Forum: Security Alerts
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