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CVE-2026-48697

7.4 HIGH

FastNetMon Community Edition through 1.2.9 does not verify TLS certificates on outbound HTTPS connections

Published: 2026-05-26 · Last updated: 2026-05-27

Severity and scoring

CVSS
7.4 HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
CWE-295

Affected products

VendorProduct
pavel-odintsovfastnetmon

Description

FastNetMon Community Edition through 1.2.9 does not verify TLS certificates on outbound HTTPS connections. The execute_web_request_secure() function in src/fast_library.cpp creates a boost::asio::ssl::context with tls_client mode and calls set_default_verify_paths() to load CA certificates, but never calls set_verify_mode(boost::asio::ssl::verify_peer). Without this call, OpenSSL performs the TLS handshake without validating the server's certificate chain, making all HTTPS connections vulnerable to man-in-the-middle attacks. This function is used for telemetry reporting to community-stats.fastnetmon.com, which sends system information including CPU model, kernel version, traffic statistics, and software configuration. An attacker can intercept and modify this data or redirect it to a malicious server.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-48689 — FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dy... (9.8 CRITICAL)
  • CVE-2026-48696 — FastNetMon Community Edition through 1.2.9 has a buffer overflow, a different vulnerability than CVE-2026-48686 and CVE-2026-48689 (6.2 MEDIUM)
  • CVE-2026-48695 — FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin (8.1 HIGH)
  • CVE-2026-48694 — FastNetMon Community Edition through 1.2.9 contains a configuration injection vulnerability in the Juniper router integration plugin (8.1 HIGH)
  • CVE-2026-48693 — FastNetMon Community Edition through 1.2.9 is vulnerable to a local symlink attack via predictable file paths in /tmp (5.5 MEDIUM)

Same CWE

  • CVE-2026-53475 — A flaw was found in assisted-migration-agent (9.3 CRITICAL)
  • CVE-2026-9758 — Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered tru... (7.3 HIGH)
  • CVE-2026-41714 — Applications that configure their broker connection via RabbitConnectionFactoryBean.setUri("amqps://...") without also calling setUseSSL(... (4.0 MEDIUM)
  • CVE-2026-42769 — Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (... (5.3 MEDIUM)
  • CVE-2026-50752 — A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a... (7.4 HIGH)