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Daily threat intelligence and vulnerability analysis from our security team. We publish expert breakdowns of critical CVEs, active exploits, and emerging attack campaigns as they happen.

Our analysts monitor vendor advisories, CISA alerts, and underground threat activity to give you actionable guidance you can use the same day. Filter by severity below to find what matters most to your environment.

Updated September 11, 2026 — all 201 published advisories are browsable here. The newest one is on the appliance that is supposed to be doing the protecting: a Cisco firewall management flaw under active attack and added to CISA's known-exploited list, on the console that controls the firewalls guarding the whole network (CVE-2026-20079). Behind it, a Chrome zero-day exploited in the wild, where simply visiting a booby-trapped site is enough to get code running on the machine (CVE-2026-87491), and a FreeIPA flaw that hands full administrator rights to anyone who connects without a password, on the directory server that decides who gets into everything else (CVE-2026-76578). The one readers keep coming back to is the Magento and Adobe Commerce zero-day being exploited against live online stores with no vendor patch available (StyleSmuggler). Every one of these sits on a device or service that faces the internet, so the clock starts the day the advisory drops — and a missed patch window is what turns a routine Tuesday into downtime, a breach-notification bill, and lost revenue. If you are not sure whether yours is patched, our 24/7 staffed security operations center handles the triage for you.

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124 articles found
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CVE-2026-42945
critical
May 18, 2026
criticalCVE AdvisoryVulnerability

CRITICAL: 18-Year-Old NGINX Rewrite Module Flaw Hits Active Exploitation in Days

A heap buffer overflow lurking in NGINX's ngx_http_rewrite_module since 2008 went from coordinated disclosure to active in-the-wild exploitation in roughly seventy-two hours. CVE-2026-42945 affects every release from 0.6.27 through 1.30.0 across both Open Source and Plus, can crash worker processes trivially, and can reach remote code execution on hosts where ASLR is disabled. Patches are available in NGINX 1.30.1 and 1.31.0.

By Danny MercerRead Full Article
CVE-2026-20182
critical
CVE AdvisoryVulnerabilityCVE-2026-20182 May 17, 2026

CRITICAL: Cisco Catalyst SD-WAN CVE-2026-20182 Hits CVSS 10.0 with Active Exploitation by UAT-8616

Cisco patched CVE-2026-20182, a CVSS 10.0 authentication bypass in Catalyst SD-WAN Controller and Manager that lets an unauthenticated remote attacker gain administrative access via the vdaemon peering service on UDP/12346. CISA added the flaw to its Known Exploited Vulnerabilities catalog with a federal remediation deadline of May 17, 2026. Threat cluster UAT-8616 is actively exploiting it. No workarounds, only patches.

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CVE-2026-41940
critical
CVE AdvisoryVulnerabilityCVE-2026-41940 May 12, 2026

CRITICAL: cPanel WHM Authentication Bypass CVE-2026-41940 Exploited for Two Months Before Patch

cPanel and WHM are bleeding root through CVE-2026-41940, a CVSS 9.8 CRLF-injection authentication bypass that has been exploited in the wild since late February 2026. The April 28 patch is available now, but attackers running automated campaigns from over 2,000 source IPs have been deploying a cross-platform Go backdoor on compromised hosts for two months. Patch immediately and assume breach on any internet-exposed unpatched server.

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CVE-2026-0300
critical
CVE AdvisoryVulnerabilityCVE-2026-0300 May 6, 2026

CRITICAL: Palo Alto PAN-OS Zero-Day Hands Attackers Root on Internet-Facing Firewalls (CVE-2026-0300)

CVE-2026-0300 is an unauthenticated buffer overflow in the PAN-OS User-ID Authentication Portal that grants root code execution on PA-Series and VM-Series firewalls. Palo Alto has confirmed limited in-the-wild exploitation against internet-exposed portals. CVSS scores 9.3 for internet-exposed deployments, 8.7 for trusted-network only. Patches roll out from May 13 through May 28, 2026.

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critical
CVE AdvisoryVulnerabilityMay 2, 2026

CRITICAL: Google Patches CVSS 10 Gemini CLI Flaw That Turned CI Workspaces Into Free RCE

A maximum severity CVSS 10.0 flaw in Google Gemini CLI headless mode let any attacker who could drop a .gemini directory into a CI workspace execute code on the runner host. Tracked as GHSA-wpqr-6v78-jr5g, it is fixed in @google/gemini-cli 0.39.1 and 0.40.0-preview.3, plus run-gemini-cli action 0.1.22. Patch immediately and rotate any secrets reachable from affected pipelines.

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critical
CVE AdvisoryVulnerabilityMay 1, 2026

CRITICAL: Google Gemini CLI Earns CVSS 10 By Trusting Every Folder It Touches

Google patched a CVSS 10.0 remote code execution flaw in the Gemini CLI that let attackers hijack CI/CD pipelines through malicious .gemini/ configurations in untrusted workspaces. The advisory ships under GHSA-wpqr-6v78-jr5g without a CVE assigned, and any organization running the run-gemini-cli GitHub Action without a pinned version was carrying the vulnerable code by default.

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CVE-2026-3854
critical
CVE AdvisoryVulnerabilityCVE-2026-3854 Apr 30, 2026

CRITICAL: GitHub Enterprise Server RCE via a Single Git Push (CVE-2026-3854)

Wiz researchers disclosed CVE-2026-3854 on April 28, a critical remote code execution flaw in GitHub Enterprise Server that turns a single authenticated git push into full server compromise. Roughly 88 percent of internet-exposed Enterprise Server instances were unpatched at disclosure. GitHub.com and Enterprise Cloud are already fixed, but self-hosted admins must upgrade to 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7, 3.19.4, or 3.20.0.

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critical
CVE AdvisoryVulnerabilityApr 25, 2026

CRITICAL: FIRESTARTER Backdoor Survives Cisco Firewall Patches in ArcaneDoor Federal Breach

CISA and the UK NCSC went public with a joint advisory on FIRESTARTER, a stealth implant tied to the UAT-4356 ArcaneDoor crew that survived firmware updates and security patches on a Cisco Firepower device inside a federal civilian agency. The malware chains CVE-2025-20333 (CVSS 9.9) and CVE-2025-20362 to gain root on Cisco ASA and FTD appliances, then hooks LINA and persists through reboots until a hard power cycle is performed.

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CVE-2026-40372
critical
CVE AdvisoryVulnerabilityCVE-2026-40372 Apr 22, 2026

CRITICAL: Microsoft Patches CVSS 9.1 ASP.NET Core Flaw Letting Attackers Forge Authentication Cookies on Linux

Microsoft published an advisory for CVE-2026-40372, a CVSS 9.1 elevation-of-privilege flaw in Microsoft.AspNetCore.DataProtection versions 10.0.0 through 10.0.6 that lets a network-positioned attacker forge authentication cookies and decrypt protected payloads. The bug primarily affects Linux and macOS deployments where the managed authenticated encryptor computes its HMAC tag over the wrong bytes and skips the comparison entirely. Patch to 10.0.7 immediately and rotate the DataProtection key ring if the application was internet-exposed during the vulnerable window.

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Our CyberOne MobileAssess platform performs deep static analysis, source code decompilation, and runtime security testing for iOS and Android apps. From one-time assessments to year-long continuous testing, we find what surface-level scanners miss.

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