CVE-2026-48686
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-48686
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
FastNetMon Community Edition through 1.2.9 contains a stack-based buffer overflow in the BGP NLRI (Network Layer Reachability Information) decoder. The function decode_bgp_subnet_encoding_ipv4_raw() in src/bgp_protocol.cpp reads prefix_bit_length directly from the BGP packet (line 99) without validating it is <= 32 for IPv4 prefixes. This value is passed to how_much_bytes_we_need_for_storing_certain_subnet_mask() which computes ceil(prefix_bit_length / 8), returning up to 32 bytes for a prefix_bit_length of 255. The result is used as the length argument to memcpy() (line 106), which copies into a 4-byte uint32_t stack variable (prefix_ipv4). This causes a stack buffer overflow of up to 28 bytes, which can be exploited for arbitrary code execution. Additionally, the unvalidated prefix_bit_length is passed to convert_cidr_to_binary_netmask_local_function_copy() (line 111), where a shift of (32 - cidr) with cidr > 32 causes undefined behavior.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
FastNetMon 安全漏洞
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 Community Edition 1.2.9及之前版本存在安全漏洞，该漏洞源于BGP NLRI解码器中未验证前缀位长度，可能导致栈缓冲区溢出。
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-2026-48686
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-48686 (1)
Security Blog Posts for CVE-2026-48686 (1)
Other References for CVE-2026-48686 (1)
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-2026-9567 | 3.3 LOW | GPAC MP4Box isom_intern.c MergeFragment null pointer dereference |
| CVE-2026-9572 | 3.3 LOW | GPAC MP4Box media.c Media_GetSample memory leak |
| 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-2025-68709 | SailingLab AppLock 安全漏洞 | |
| CVE-2026-48689 | FastNetMon 缓冲区错误漏洞 | |
| 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-2026-48686
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