UnknownPublished 7 Mar 2026

tlp clear · KRVTZ-NET IDS alerts for 2026-03-07

Affects tlp clearSource CIRCL OSINT Feed

TLP:CLEAR, disclosure is not limited

Mentions 1 CVE

Mentioned vulnerabilities

CVE-2023-27997

Description

KRVTZ-NET IDS alerts for 2026-03-07

Impact

Successful exploitation of CVE-2023-27997 could allow attackers to bypass authentication on Fortigate VPN devices, potentially leading to unauthorized network access, data breaches, lateral movement, and compromise of sensitive resources. Access to phpinfo pages discloses critical server configuration details that attackers can leverage for targeted exploits or privilege escalation. Although no active exploits are currently reported, ongoing reconnaissance increases the risk of future exploitation attempts. The confidentiality and integrity of affected networks could be significantly impacted, and availability might be affected through denial-of-service conditions. The current low severity rating reflects the reconnaissance stage and absence of known active exploits but does not eliminate the potential for escalation.

Defensive guidance

No official patches or fixes are noted in the report for CVE-2023-27997. Recommended mitigations include monitoring VPN logs and IDS/IPS alerts for anomalous requests to /remote/logincheck to detect reconnaissance or brute-force attempts early; restricting access to Fortigate VPN management interfaces and login endpoints via IP whitelisting, segmentation, or firewall rules; implementing multi-factor authentication on VPN access; hardening web servers by disabling or restricting access to phpinfo pages; conducting regular vulnerability assessments and penetration tests focusing on VPN and web server configurations; employing network segmentation to isolate VPN infrastructure; staying informed through threat intelligence feeds about emerging exploits; educating security teams to recognize reconnaissance patterns; deploying web application firewalls to block malicious HTTP requests targeting vulnerable endpoints; and engaging with Fortinet support and community channels to track and apply patches promptly once available.

Indicators of compromise

IP addresses 3

2001:470:1:332::28ET EXPLOIT Fortigate VPN - Repeated GET Requests to /remote/logincheck (CVE-2023-27997)
2001:470:1:c84::26ET EXPLOIT Fortigate VPN - Repeated GET Requests to /remote/logincheck (CVE-2023-27997)
34.142.251.255ET WEB_SERVER WEB-PHP phpinfo access

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Description

AI analysisMachine-generated, updated 10 May 2026, 02:27 UTC

Indicators of compromise

IP addresses 3

Community reviews

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