U.S. CISA adds Microsoft Windows and Rejetto HTTP File Server bugs to its Known Exploited Vulnerabilities catalog
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Hackers Mass-Scan Exposed Vite Servers to Steal AWS and Azure Cloud Credentials
F5 honeypots record mass scanning of exposed Vite dev servers exploiting CVE-2026-39364 to harvest AWS and Azure cloud credentials.
F5 honeypots recorded 807 session-grouped attacks and roughly 32,000 raw events in August 2026 against internet-exposed Vite development servers, up from 1,732 events in the previous three months. Scanners abused CVE-2026-39364 (Vite 7.1.0-7.3.1, 8.0.0-8.0.4), bypassing server.fs.deny via @fs routes with ?raw/?import query parameters and double encoding to read .env files, AWS SSO caches, Azure tokens, and Terraform state. The same infrastructure also probed CVE-2025-29927 (Next.js), CVE-2025-30208, CVE-2025-31125 (KEV-listed January 2026), and CVE-2024-45811. Most traffic originated from Google Cloud IP ranges, with the US accounting for 17,297 events.
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Network Security Trends: August
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Mass-Scanning Campaign Exploits Vite Flaw to Extract Cloud Credentials From Exposed Dev Servers
Mass-scanning campaign exploits CVE-2026-39364 in exposed Vite dev servers to steal AWS/Azure credentials, .env files, and Terraform state.
F5 Labs documented an August 2026 credential-harvesting campaign exploiting CVE-2026-39364 (CVSS 8.2), a Vite flaw allowing unauthenticated attackers to bypass server.fs.deny via query parameters like ?raw and ?import&raw. Attackers issue GET requests to /@fs/ endpoints to retrieve .env files, AWS and Azure credentials, terraform.tfstate, serverless.yml, and /proc data from dev servers exposed via --host or misconfigured Docker port mappings. Requests impersonate crawlers like Googlebot, ClaudeBot, and GPTBot, forge X-Forwarded-For headers, and largely originate from GCP ranges in the US, Belgium, Netherlands, Singapore, and Taiwan.
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Ransomware Gang Exploits SimpleHelp RMM to Compromise Utility Billing
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CLOP targets Gladinet CentreStack servers in large
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Cisco FMC flaws exploited by ransomware gang, state-sponsored hackers
Cisco Talos confirms ransomware and state-sponsored groups exploited CVE-2026-20079 and CVE-2026-20316 in Secure Firewall Management Center, deploying Qilin ransomware and Cyclops Blink.
Cisco Talos identified three threat clusters (UAT-12197, UAT-11823, UAT-11988) exploiting CVE-2026-20079, a CVSS 10.0 authentication bypass, and CVE-2026-20316, a CVSS 5.3 static-credential flaw, in Cisco Secure Firewall Management Center. Qilin affiliates used static credentials for reconnaissance and deployed Qilin ransomware; a Sandworm-linked cluster deployed a Cyclops Blink backdoor via a malicious license.tmp file; a third cluster stole credentials through a JSP web shell. Cisco has released hotfixes and urges immediate installation, with broader patches expected next week.
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