Bug 2481547 (CVE-2026-48697) - CVE-2026-48697 fastnetmon: missing verification of TLS certificates on outbound HTTPS connections
Summary: CVE-2026-48697 fastnetmon: missing verification of TLS certificates on outbou...
Keywords:
Status: NEW
Alias: CVE-2026-48697
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2482719 2482720
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-26 17:03 UTC by OSIDB Bzimport
Modified: 2026-05-28 15:42 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-05-26 17:03:27 UTC
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.


Note You need to log in before you can comment on or make changes to this bug.