r/netsec • • 21h ago

PwnEscape: Guest-to-Host KVM Escape (CVE-2026-99999)

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50 Upvotes

r/netsec • • 16h ago

Nadella Calls Your AI an Insider Risk. Lawmakers Already Put Your Name on the Liability Certification.

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9 Upvotes

r/netsec • • 14h ago

Deep-Dive into Android Binder UaF (CVE-2023-20938) using Time-Travel Debugging

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6 Upvotes

r/netsec • • 9h ago

New web obfuscation technique where even just formatting rewrites script logic (Chromium DevTools, prettier, WebCrack, Terser and more)

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1 Upvotes

A formatter, minifier or deobfuscator can be made to turn one script into another. 186 techniques across 37+ JavaScript processors, from Chromium DevTools to WebCrack, plus a Tetris script that becomes Snake.


r/netsec • • 17h ago

16% of RPKI-covered IPv4 routes still allow a forged-origin hijack that passes validation, the setup behind the Virtualizor update attack

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4 Upvotes

Author here, I work at IPinfo. some security-relevant highlights part of the post:

  • The August 28 Virtualizor update attack used a forged-origin /24 inside Hetzner’s space. From what we saw, it was RPKI-valid because Hetzner’s ROA covered the /16 and allowed announcements down to /24, and no real /24 existed to compete with it.
  • We also measured how common that setup is. In this case, of 855,217 RPKI-covered IPv4 routes, 138,698 (16.2%) have a ROA looser than the route announced and no more-specific route of their own filling the gap. For IPv6 it’s 20.9%. That’s roughly 18 million more-specifics someone could announce today and come out RPKI-valid and uncontested.
  • Hosting providers also differ a lot: Contabo leaves 540 of 553 covered routes open, DigitalOcean 780 of 863, OVH 11.5%.
  • Invalid routes are being dropped now: a typical valid route is seen by 596 vantage points, an invalid one by 2. So the remaining risk is routes that pass the check, not ones that fail it.
  • There's also the fix in RFC 9319: leave maxLength unset, so a ROA only matches the block you actually announce.

Method is at the end of the post. Happy to answer questions


r/netsec • • 17h ago

CVE-2026-108082: Symfony ReDoS. One request. Seconds of CPU

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5 Upvotes

If you run Laravel (or anything on Symfony), read this. CVE-2026-108082: one unauthenticated GET, seconds of backend CPU, ~100 requests and the app times out. A dumb ReDoS that common config turns into a real DoS. 👀⤵️


r/netsec • • 1d ago

Exposing AdFection: How Discover-Tech Turned Targeted Ads Into a Pipeline for Zero-Click Mercenary Spyware

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49 Upvotes

r/netsec • • 20h ago

Web Environment Integrity vs. Private Access Tokens - They're the same thing!

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2 Upvotes

r/netsec • • 19h ago

The Cloudflare Appstore (Appflare) Malware Audit

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1 Upvotes

r/netsec • • 2d ago

AhsayCBS Deep-Dive: Auth Bypass to RCE

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14 Upvotes

r/netsec • • 3d ago

Vghost (CVE-2026-74580): Linux kernel vhost stale IOTLB cache leading to universal LPE and Guest-to-Host escape vector

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46 Upvotes

r/netsec • • 3d ago

We Let AI Fuzz Adobe Reader for a Week. It Found a Critical Zero-Day CVE-2026-81983

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113 Upvotes

r/netsec • • 3d ago

Playing It SFAPE: Code Execution in Isolated User Mode

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11 Upvotes

Doyensec discovered multiple vulnerabilities in SFAPE.dll, a VBS enclave shipped with Windows, and chained them to gain code execution within the enclave in Windows Isolated User Mode (VTL1). The post explores how VBS enclaves work and how memory corruption can undermine their isolation guarantees. Microsoft addressed the reported issue in the September 2026 bulletin under CVE-2026-83498.


r/netsec • • 5d ago

Google paid me $90,000 for this RCE

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547 Upvotes

r/netsec • • 4d ago

CVE-2026-91768: FastCGI allowed_clients compared only 96 of an IPv6 address's 128 bits

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107 Upvotes

r/netsec • • 5d ago

Telegram Desktop vulnerability allowed any user file to be stolen

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173 Upvotes

r/netsec • • 3d ago

Passkeys are a trap

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0 Upvotes

r/netsec • • 4d ago

LG webOS sync-demo Preauth RCE

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16 Upvotes

An exploit chain was found in LG webOS, leading to root command execution. The chain starts with a client-key issuance bypass, progresses through service-level access, and ultimately leads to root command execution.


r/netsec • • 6d ago

A story of wifi secrets, UART lockdowns and a damaged flash memory chip

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38 Upvotes

r/netsec • • 6d ago

GitHub Actions leaking secrets when Miri output is cached

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4 Upvotes

r/netsec • • 6d ago

Smashing the token limit with overlapping fragments (CSS injection token exfiltration, PortSwigger Research)

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3 Upvotes

r/netsec • • 7d ago

Death By A Thousand PaperCuts (PaperCut Pre-Auth RCE Chain and Patch Bypasses WT-2026-0141-0144/CVE-2026-82077/CVE-2026-82078/CVE-2026-81578) - watchTowr Labs

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50 Upvotes

r/netsec • • 8d ago

How We Found Thousands of Exposed NVIDIA GPUs and a Way to Disrupt Them (CVE-2026-47483)

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119 Upvotes

TL;DR: NVIDIA DCGM Exporter is a widely used monitoring tool that collects GPU metrics like utilization, memory, temperature, and power consumption from AI servers.
We discovered that thousands of these monitoring endpoints are exposed to the public internet, allowing anyone to inspect GPU infrastructure. Worse, we found a high-severity vulnerability (CVE-2026-47483, CVSS 8.2) that lets unauthenticated attackers exhaust server resources, crash GPU monitoring, and potentially disrupt AI workloads remotely.
A few other interesting findings:
2,100+ exposed GPU servers, revealing telemetry from 12,000+ GPUs worth ~$100M, including H100s, H200s, and Blackwell GPUs.
60% of exposed GPUs reported 0% utilization across our scans.
12,096 additional servers exposed infrastructure details, including OS, firmware, and networking information.
NVIDIA fixed the vulnerability following our responsible disclosure.
Full research: https://lava.security/research/cve-2026-47483-nvidia-dcgm-exporter-vulnerability


r/netsec • • 8d ago

A Single POST Freezes Any Next.js Server

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140 Upvotes

r/netsec • • 8d ago

Pending Moderation A JPEG, a Race, and a Ghost: Breaking Discourse's Image Pipeline

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6 Upvotes