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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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202 articles found
Featured Story
CVE-2026-0300
critical
May 6, 2026
criticalCVE AdvisoryVulnerability

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.

By Danny MercerRead Full Article
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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CVE-2024-1708
high
CVE AdvisoryVulnerabilityCVE-2024-1708 Apr 29, 2026

HIGH: Storm-1175 Chains ConnectWise ScreenConnect Bugs to Drop Medusa Ransomware (CVE-2024-1708)

CISA added the two-year-old ConnectWise ScreenConnect path traversal flaw CVE-2024-1708 to its Known Exploited Vulnerabilities catalog on April 28, 2026, after China-aligned Storm-1175 was caught chaining it with the SlashAndGrab auth bypass CVE-2024-1709 to deploy Medusa ransomware through compromised MSP infrastructure. Federal agencies have until May 12 to remediate.

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CVE-2026-32202
high
CVE AdvisoryVulnerabilityCVE-2026-32202 Apr 28, 2026

HIGH: APT28 Exploits Incomplete Windows Shell Patch for Zero-Click NTLM Theft (CVE-2026-32202)

Microsoft has confirmed active exploitation of CVE-2026-32202, a Windows Shell spoofing flaw that turns out to be an incomplete patch for an APT28 zero-day from earlier this year. The Russian GRU-linked group is using crafted LNK files to silently steal NTLM credentials with zero clicks, and the original April 14 advisory dramatically understated the severity until Microsoft corrected it on April 27.

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high
CVE AdvisoryVulnerabilityApr 27, 2026

HIGH: Bitwarden CLI Hit by Shai-Hulud Third Coming Worm in Checkmarx Supply Chain Cascade

A poisoned build of @bitwarden/cli version 2026.4.0 lived on the npm registry for roughly ninety minutes on April 22, 2026, infecting around 334 developer machines with the third generation of the Shai-Hulud worm. The attack chained off the prior compromise of the checkmarx/ast-github-action GitHub Action, harvested cloud credentials, GitHub and npm tokens, and AI coding tool configs, then self-propagated by injecting malicious workflows into accessible repositories.

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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-2026-28950
high
CVE AdvisoryVulnerabilityCVE-2026-28950 Apr 23, 2026

HIGH: Apple Patches iOS Notification Bug That Let the FBI Pull Deleted Signal Messages Off an iPhone (CVE-2026-28950)

Apple shipped iOS 26.4.2, iPadOS 26.4.2, iOS 18.7.8, and iPadOS 18.7.8 to fix CVE-2026-28950, a data retention flaw in the Notification Services framework that kept the text of deleted notifications in an internal database. The FBI used the bug to recover Signal message content from a seized iPhone after the Signal app had been deleted. Patch every managed iPhone today and enforce preview redaction on sensitive messaging apps.

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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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high
CVE AdvisoryVulnerabilityApr 21, 2026

HIGH: Three Microsoft Defender Zero-Days Chain Into SYSTEM Takeover With Two Still Unpatched

Three zero-day vulnerabilities in Microsoft Defender, nicknamed BlueHammer, RedSun, and UnDefend, are under active exploitation after researcher Chaotic Eclipse dumped working proof-of-concept code. Only BlueHammer (CVE-2026-33825, CVSS 7.8) has been patched. RedSun escalates local users to SYSTEM on fully patched systems while UnDefend silently disables Defender definition updates, making the chained attack especially dangerous until the May 13 Patch Tuesday.

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