CVE-2026-48689
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FastNetMon是Pavel Odintsov个人开发者的一个基于多个数据包捕获引擎构建的高性能 DDoS 检测器/传感器。 FastNetMon 1.2.9及之前版本存在缓冲区错误漏洞，该漏洞源于dynamic_binary_buffer_t类中边界检查错误，可能导致堆缓冲区溢出。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1133 · External Remote Services T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-48689
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/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) use an incorrect bounds check of the form 'if (offset + length > maximum_internal_storage_size + 1)' instead of the correct 'if (offset + length > maximum_internal_storage_size)'. This allows writing exactly one byte past the end of the heap-allocated buffer. The class is used pervasively in BGP message encoding/decoding, NetFlow template processing, and Flow Spec NLRI construction. An attacker who can send network traffic (NetFlow, sFlow, IPFIX, or BGP) to a FastNetMon instance can trigger this overflow, potentially achieving arbitrary code execution by corrupting heap metadata. Notably, the append_byte() method uses the correct bounds check, confirming the inconsistency.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
FastNetMon 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FastNetMon是Pavel Odintsov个人开发者的一个基于多个数据包捕获引擎构建的高性能 DDoS 检测器/传感器。 FastNetMon 1.2.9及之前版本存在缓冲区错误漏洞，该漏洞源于dynamic_binary_buffer_t类中边界检查错误，可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2026-48689
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2026-48689 (1)
Other References for CVE-2026-48689 (2)
Same Patch Batch · n/a · 2026-05-26 · 31 CVEs total
| CVE-2026-9496 | 7.5 HIGH | pacote 安全漏洞 |
| CVE-2026-9580 | 7.3 HIGH | JeecgBoot selectDepart LoginController.selectDepart access control |
| CVE-2026-9495 | 7.3 HIGH | @koa/router 安全漏洞 |
| CVE-2026-9581 | 6.3 MEDIUM | JeecgBoot add access control |
| CVE-2026-9579 | 6.3 MEDIUM | JeecgBoot SysUser userEdit user.getUsername access control |
| CVE-2026-9541 | 5.3 MEDIUM | Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow |
| CVE-2026-9568 | 5.0 MEDIUM | ThingsBoard YAML provision getGatewayDockerComposeFile code injection |
| CVE-2026-9604 | 4.3 MEDIUM | JeecgBoot AiragModelController access control |
| CVE-2026-9572 | 3.3 LOW | GPAC MP4Box media.c Media_GetSample memory leak |
| CVE-2026-9567 | 3.3 LOW | GPAC MP4Box isom_intern.c MergeFragment null pointer dereference |
| CVE-2025-68709 | SailingLab AppLock 安全漏洞 | |
| CVE-2025-68711 | AppLockZ - TrustedApp App Lock and Fingerprint Lock 安全漏洞 | |
| CVE-2025-68708 | SailingLab AppLock 安全漏洞 | |
| CVE-2026-36239 | PbootCMS 安全漏洞 | |
| CVE-2025-68710 | Easyelife App Lock 安全漏洞 | |
| CVE-2026-48685 | FastNetMon 安全漏洞 | |
| CVE-2026-48694 | FastNetMon 安全漏洞 | |
| CVE-2026-48695 | FastNetMon 安全漏洞 | |
| CVE-2026-48696 | FastNetMon 安全漏洞 | |
| CVE-2026-48697 | FastNetMon 安全漏洞 |
Showing top 20 of 31 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-48689
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