InfoSecBulletin Cybersecurity for mankind
Cybersecurity researchers recently revealed a coordinated cloud-based scanning attack that targeted 75 different exposure points earlier this month.
On May 8, 2025, GreyNoise observed activity from 251 malicious IP addresses located in Japan and hosted by Amazon.
Critical cPanel, GitLab AI Gateway and Dell CSM Flaws Enable RCE And Admin Hijacking
Nearly 100,000 email addresses exposed in first AI-related data breach in Singapore
Hackers Exploit Zimbra Mail Servers: TeamViewer patched 5 critical flaws
Google Warns of Hackers Actively Exploiting Citrix 0-Day Flaws
CISA Warns Critical MikroTik RouterOS Flaw While Cisco SD-WAN Zero-Day Exploited in Attacks
Apple Zero-Day Exploited: Pentagon Data Breach Reportedly Exposes Sensitive Data of 3 Million People
JadePuffer Agentic AI targets and destroys Azure’s cloud resources
“InfoSecCon-2026: Bangladesh’s Cybersecurity Leaders Unite to Shape a Safer Digital Future”
Microsoft Patches CVSS 10.0 Azure AI Foundry Vulnerability Allowing Privilege Escalation
AWS is unable to restore access to Bahrain, one UAE cloud data zone after war damage
“These IPs triggered 75 distinct behaviors, including CVE exploits, misconfiguration probes, and recon activity,” the threat intelligence firm said. “All IPs were silent before and after the surge, indicating temporary infrastructure rental for a single operation.”
The scanning efforts have been found to have targeted a wide array of technologies from Adobe ColdFusion, Apache Struts, Apache Tomcat, Drupal, Elasticsearch, and Oracle WebLogic, among others.
The operation involved attempts to exploit known vulnerabilities and identify weak spots in web infrastructure, suggesting that the threat actors were searching for any vulnerable system.
Adobe ColdFusion — CVE-2018-15961 (Remote code execution)
Apache Struts — CVE-2017-5638 (OGNL injection)
Atlassian Confluence — CVE-2022-26134 (OGNL Injection)
Bash — CVE-2014-6271 (Shellshock)
Elasticsearch — CVE-2015-1427 (Groovy sandbox bypass and remote code execution)
CGI script scanning
Environment variable exposure
Git config crawlers
Shell upload checks, and
WordPress author checks
An interesting aspect is that the broad-spectrum scan was active only on May 8, with no noticeable change in the activity before or after the date.
GreyNoise reported that 295 IP addresses were scanned for CVE-2018-15961, 265 for Apache Struts, and 260 for CVE-2015-1427. Among these, 262 IPs were common between ColdFusion and Struts, and 251 IPs were shared across all three scans.
“This level of overlap points to a single operator or toolset deployed across many temporary IPs — an increasingly common pattern in opportunistic but orchestral scanning,” GreyNoise said.
Organizations must promptly block the malicious IP addresses to reduce the threat, but follow-up attacks may come from different sources.
