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 October 3, 2026 — all 220 published advisories are browsable here. The four drawing the most attention right now: a FortiMail email-gateway flaw being exploited before any fix exists (CVE-2026-104286, rated 9 out of 10 for severity) — there is no patch yet, so every affected 8.0, 7.6, 7.4 and 7.2 system is relying on Fortinet’s workaround, starting with switching off the Identity Based Encryption portal if you do not use it; two Citrix NetScaler flaws exploited for weeks before the September 27 fix (CVE-2026-88771 and CVE-2026-88772) — a patched box can still be hosting a webshell (a hidden back door left behind in the software itself), so update to 14.1-73.37 or 13.1-64.23 and then go looking for what was left behind; a Roundcube webmail flaw that lets an attacker tamper with the mail database before anyone logs in (CVE-2026-48842), patched in May 2026 and still being exploited because it ships inside hosting control panels most firms forget they run; and a Microsoft SharePoint Server flaw under active attack that lets an intruder run their own code on the server holding your internal documents (CVE-2026-65660), whose CISA federal patch deadline passed on September 28, so an unpatched server is now overdue rather than pending. Two of the four are email systems, and one has no fix at all, which is why what decides the cost is how fast someone notices. If you are not sure who is reading the alerts at 2 a.m., our 24/7 staffed security operations center handles the detection and the response.
Progress Software disclosed CVE-2026-4670, an unauthenticated authentication bypass in MOVEit Automation rated CVSS 9.8, alongside CVE-2026-5174, a CVSS 7.7 privilege escalation. Patch to 2025.1.5, 2025.0.9, or 2024.1.8. No workarounds exist.
A pre-authentication bypass in cPanel and WHM (CVE-2026-41940, CVSS 9.8) is being mass-exploited. CRLF injection in cpsrvd lets attackers forge a session cookie and gain root with no credentials. CISA added it to KEV on April 30, 2026. Patch immediately.
Read moreA logic flaw in the Linux kernel algif_aead module gives any unprivileged local user root access on every major distro released since 2017. CISA added CVE-2026-31431 to the KEV catalog with a mandatory federal patch deadline. If you run Linux servers, patch today or assume compromise.
Read moreA 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.
Read moreGoogle 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.
Read moreWiz 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.
Read moreCISA 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.
Read moreMicrosoft 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.
Read moreA 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.
Read moreThe FIRESTARTER implant from the ArcaneDoor campaign persists through Cisco ASA firmware updates on federal networks. CISA and UK NCSC issued a joint advisory with IOCs, detection signatures, and emergency mitigation steps. If you run Cisco Firepower or ASA, check your devices now.
Read moreCISA 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.
Read moreA server-side request forgery flaw in the LMDeploy vision-language pipeline was under active exploitation twelve hours and thirty-one minutes after public disclosure, and no upstream patch has shipped yet. Attackers are already probing exposed instances for AWS metadata credentials, Redis on localhost, and loopback services.
Read moreApple 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.
Read moreMicrosoft 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.
Read moreThree 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.
Read moreCisco released patches for four critical vulnerabilities affecting Identity Services Engine and Webex. CVE-2026-20184 allows unauthenticated attackers to impersonate any Webex user, while three ISE flaws enable remote code execution and root privilege escalation.
Read moreA critical unauthenticated RCE in nginx-ui lets attackers take over your web server through a single API call. The flaw exists because one MCP endpoint skipped authentication checks entirely. Patch immediately or restrict access to the management interface.
Read moreScattered Spider, the group behind the MGM and Caesars attacks, has hit Marks & Spencer, Co-op, and Harrods in a coordinated campaign deploying DragonForce ransomware. The attacks relied on social engineering help desk staff rather than technical exploits.
Read moreCVE-2024-9486 (CVSS 9.8) in Kubernetes Image Builder leaves a well-known default SSH password on every VM image it builds. Anyone who knows the builder account password can SSH in and take full control. Check your images and rotate credentials immediately.
Read moreCitizen Lab revealed that law enforcement agencies worldwide are using Webloc, a tool built by Israeli intelligence company Cobwebs Technologies, to track 500 million mobile devices through advertising data without warrants. Clients include ICE, US military, and police departments across America.
Read moreOur 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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