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...

FastNetMon 安全漏洞

FastNetMon is a high-performance DDoS detector/sensor developed by Pavel Odintsov. It is built using multiple packet capture engines. Versions of FastNetMon Community Edition 1.2.9 and earlier contained security vulnerabilities. These vulnerabilities stemmed from the lack of prefix bit length...

CVE-2026-48697: Improper Certificate Validation

FastNetMon Community Edition through 1.2.9 does not verify TLS certificates on outbound HTTPS connections. The executewebrequestsecure function in src/fastlibrary.cpp creates a boost::asio::ssl::context with tlsclient mode and calls setdefaultverifypaths to load CA certificates, but never calls...

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-2026-48696

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

CVE-2026-48688: Out-of-bounds Read

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...

CVE-2026-48690

FastNetMon Community Edition through 1.2.9 contains an integer overflow vulnerability in the packet capture buffer allocation. In src/packetstorage.hpp, the allocatebuffer function computes memorysizeinbytes as 'buffersizeinpackets maxcapturedpacketsize + sizeoffastnetmonpcappkthdrt +...

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 ...

PT-2026-43354

Name of the Vulnerable Software and Affected Versions FastNetMon Community Edition versions prior to 1.3.0 Description A configuration injection issue exists in the Juniper router integration plugin. In the file src/juniper plugin/fastnetmon juniper.php, the variable IP ATTACK received from argv1...

CVE-2026-48693: Improper Link Resolution Before File Access

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-2026-48683: 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 ...

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...

FastNetMon 安全漏洞

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: Missing Authentication for Critical Function

FastNetMon Community Edition through 1.2.9 exposes a gRPC API server on port 50052 with no authentication mechanism. The server is initialized with grpc::InsecureServerCredentials src/fastnetmon.cpp line 477 and a source code comment explicitly acknowledges 'Listen on the given address without an...

CVE-2026-48687: Improper Neutralization of Special Elements used in an OS Command

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-2026-48691: Integer Overflow or Wraparound

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-2026-48690: Heap-based Buffer Overflow

FastNetMon Community Edition through 1.2.9 contains an integer overflow vulnerability in the packet capture buffer allocation. In src/packetstorage.hpp, the allocatebuffer function computes memorysizeinbytes as 'buffersizeinpackets maxcapturedpacketsize + sizeoffastnetmonpcappkthdrt +...

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-2026-48689: Out-of-bounds Write

FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamicbinarybuffert class src/dynamicbinarybuffer.hpp. Five methods appenddynamicbuffer, appenddataaspointer, appenddataasobjectptr, memcpyfromptr, memcpyfromobjectptr use an incorrect bounds chec...