CVE-2026-48693

FastNetMon Community Edition through 1.2.9 is vulnerable to a local symlink attack via predictable file paths in /tmp. The statistics file path defaults to '/tmp/fastnetmon.dat' src/fastnetmon.cpp line 159. The printscreencontentsintofile function src/fastnetmonlogic.cpp line 2186 opens this path...

CVE-2026-48687

FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the Juniper router integration plugin. The log function in src/juniperplugin/fastnetmonjuniper.php lines 117-118 constructs shell commands by concatenating the $msg parameter directly into exec calls:...

CVE-2026-48687

CVE-2026-48687 affects FastNetMon Community Edition up to 1.2.9, specifically the Juniper router integration plugin. The OS command injection stems from the PHP file src/juniper_plugin/fastnetmon_juniper.php (log function) which builds shell commands by concatenating unsanitized user data from ar...

PT-2026-43311

Name of the Vulnerable Software and Affected Versions FastNetMon Community Edition versions prior to 1.2.10 Description A local symlink attack is possible due to predictable file paths in the /tmp directory. The software uses a default statistics file path at '/tmp/fastnetmon.dat'. The print scre...

CVE-2026-48687

FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the Juniper router integration plugin. The log function in src/juniperplugin/fastnetmonjuniper.php lines 117-118 constructs shell commands by concatenating the $msg parameter directly into exec calls:...

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...

CVE-2026-48683

FastNetMon Community Edition through 1.2.9 contains an out-of-bounds read vulnerability in the NetFlow v9 data flowset processor. In src/netflowplugin/netflowv9collector.cpp, the Data template branch lines 1695-1702 iterates over flow records without performing a per-iteration bounds check agains...

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...

CVE-2026-48683: Out-of-bounds Read

FastNetMon Community Edition through 1.2.9 contains an out-of-bounds read vulnerability in the NetFlow v9 data flowset processor. In src/netflowplugin/netflowv9collector.cpp, the Data template branch lines 1695-1702 iterates over flow records without performing a per-iteration bounds check agains...

CVE-2026-48686: Buffer Copy without Checking Size of Input

FastNetMon Community Edition through 1.2.9 contains a stack-based buffer overflow in the BGP NLRI Network Layer Reachability Information decoder. The function decodebgpsubnetencodingipv4raw in src/bgpprotocol.cpp reads prefixbitlength directly from the BGP packet line 99 without validating it is ...

EUVD-2026-31844

FastNetMon Community Edition through 1.2.9 contains multiple out-of-bounds reads in the BGP MPREACHNLRI IPv6 attribute decoder. The function decodempreachipv6 in src/bgpprotocol.cpp contains a TODO comment at line 156 explicitly acknowledging 'we should add sanity checks to avoid reads after...

EUVD-2026-31950

FastNetMon Community Edition through 1.2.9 has a buffer overflow, a different vulnerability than CVE-2026-48686 and CVE-2026-48689...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...

CVE-2026-48694

CVE-2026-48694 affects FastNetMon Community Edition up to 1.2.9 via the Juniper router integration plugin. The vulnerability arises because the variable $IP_ATTACK (from argv[1]) is directly interpolated into NETCONF set-configuration commands without validation, allowing an attacker-controlled I...

CVE-2026-48685

CVE-2026-48685 affects FastNetMon Community Edition up to 1.2.9. The issue is an out-of-bounds memory access caused by incorrect handling of BGP path attributes when the extended length flag is set. In parse_raw_bgp_attribute(), extended_length_bit triggers a 2-byte length field, but the code rea...

CVE-2026-48689

CVE-2026-48689 affects FastNetMon Community Edition up to 1.2.9, due to an off-by-one heap-based buffer overflow in dynamic_binary_buffer.hpp. Five methods (append_dynamic_buffer, append_data_as_pointer, append_data_as_object_ptr, memcpy_from_ptr, memcpy_from_object_ptr) check bounds with offset ...

CVE-2026-48693

CVE-2026-48693 concerns the FastNetMon Community Edition up to 1.2.9. The issue is a local symlink attack due to predictable file paths in /tmp, notably the default statistics file at '/tmp/fastnetmon.dat'. The vulnerable code path opens this path with std::ios::trunc without following symlinks o...

FastNetMon security vulnerability

FastNetMon is a high-performance DDoS detector/sensor developed by Pavel Odintsov. It is based on multiple packet capture engines. Versions of FastNetMon Community Edition prior to 1.2.9 contained a security vulnerability caused by integer overflow during the allocation of packet capture buffers,...

CVE-2026-48692

FastNetMon Community Edition

PT-2026-43355

Name of the Vulnerable Software and Affected Versions FastNetMon Community Edition versions prior to 1.2.10 Description An OS command injection issue exists in the MikroTik router integration plugin. The log function in src/mikrotik plugin/fastnetmon mikrotik.php constructs shell commands by...