The KRVTZ-NET IDS alerts from 2026-03-15 detail reconnaissance activities involving multiple IP addresses conducting suspicious network probes. These include accessing PHP info pages on web servers, HTTP probes of git repositories, and repeated GET requests to the Fortigate VPN login endpoint (/remote/logincheck) associated with CVE-2023-27997. The activity is classified as reconnaissance, indicating attackers are gathering information to identify potential vulnerabilities. No affected software versions or direct exploits are included in the report. The presence of IPv4 and IPv6 addresses indicates broad scanning efforts. The alert severity is low, and no known exploits in the wild are reported for this activity.

The immediate impact is low since the activity is limited to reconnaissance without confirmed exploitation. However, accessing PHP info pages and git repositories could expose sensitive configuration details or source code, aiding future attacks. The repeated attempts to access the Fortigate VPN login endpoint suggest targeting of a known vulnerability (CVE-2023-27997), which if exploited, could allow unauthorized VPN access and compromise network confidentiality and integrity. Organizations running Fortigate VPN appliances or vulnerable web servers globally are at risk of follow-on attacks if these reconnaissance efforts lead to successful exploitation.

No official patch is indicated in this alert; however, organizations should ensure Fortigate VPN devices are updated with the latest security patches addressing CVE-2023-27997 to prevent exploitation. Restrict or disable access to sensitive web server endpoints such as phpinfo pages and git repositories to reduce information leakage. Deploy web application firewalls (WAFs) and intrusion detection/prevention systems to detect and block unauthorized scanning and probing attempts. Implement targeted monitoring for suspicious network activity and automate blocking of offending IP addresses. Conduct regular vulnerability assessments and penetration testing to identify and remediate exposed services. Maintain network segmentation and incident response plans to quickly address reconnaissance and potential exploitation attempts.