CVE catalog
CVE-2026-48697
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:
- Severity
- High · CVSS 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.16% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | fastnetmon | sid | 1.2.9-1 | vulnerable |
| Debian | fastnetmon | forky | 1.2.9-1 | vulnerable |
| Debian | fastnetmon | trixie | 1.2.9-0+deb13u1 | vulnerable |
| Debian | fastnetmon | trixie-security | 1.2.9-0+deb13u1 | vulnerable |
| Debian | fastnetmon | bookworm | 1.2.4-2+deb12u1 | vulnerable |
| Debian | fastnetmon | bookworm-security | 1.2.4-2+deb12u1 | vulnerable |
| Cpe | fastnetmon | Not reported | Not reported | vulnerable |
| Cpe | fastnetmon | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | fastnetmon | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | fastnetmon | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | fastnetmon | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | fastnetmon | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
Notes
[trixie] fastnetmon: Minor issue [bookworm] fastnetmon: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [fastnetmon]Affected
Details (6)
1.2.4-2+deb12u1· amd64 · bookwormAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
1.2.4-2+deb12u1· arm64 · bookwormAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
1.2.8-1~bpo12+1· amd64 · bookworm-backportsAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
1.2.8-1~bpo12+1· arm64 · bookworm-backportsAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
1.2.4-2+deb12u1· amd64 · bookworm-securityAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
1.2.4-2+deb12u1· arm64 · bookworm-securityAffected
nvd · fastnetmon · debian · bookworm; nvd · fastnetmon · debian · 12
[Debian 13 (Trixie)]
- [fastnetmon]Affected
Details (4)
1.2.9-0+deb13u1· amd64 · trixieAffected
nvd · fastnetmon · debian · 13
1.2.9-0+deb13u1· arm64 · trixieAffected
nvd · fastnetmon · debian · 13
1.2.9-0+deb13u1· amd64 · trixie-securityAffected
nvd · fastnetmon · debian · 13
1.2.9-0+deb13u1· arm64 · trixie-securityAffected
nvd · fastnetmon · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-48697]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-48697]
- [https://security-tracker.debian.org/tracker/CVE-2026-48697]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48697.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]