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CVE-2026-29972

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.

nanoMODBUS是Valerio De Benedetto个人开发者的一款紧凑的Modbus协议C语言库。 nanoMODBUS 1.22.0及之前版本存在安全漏洞，该漏洞源于nanomodbus.c中recv_read_registers_res函数存在栈缓冲区溢出，可能导致恶意Modbus TCP服务器发送响应时造成缓冲区溢出，可能允许远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 0.92% · P59

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-29972

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
nanoMODBUS through v1.22.0 has a stack-based buffer overflow in recv_read_registers_res() in nanomodbus.c. When a client calls nmbs_read_holding_registers() or nmbs_read_input_registers(), the library writes register data from the server response to the caller-provided buffer based on the response's byte_count field before validating that byte_count matches the requested quantity. A malicious Modbus TCP server can send a response with byte_count=250 (125 registers) regardless of the requested quantity, causing up to 248 bytes of attacker-controlled data to overflow the buffer, potentially allowing remote code execution.
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
nanoMODBUS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nanoMODBUS是Valerio De Benedetto个人开发者的一款紧凑的Modbus协议C语言库。 nanoMODBUS 1.22.0及之前版本存在安全漏洞，该漏洞源于nanomodbus.c中recv_read_registers_res函数存在栈缓冲区溢出，可能导致恶意Modbus TCP服务器发送响应时造成缓冲区溢出，可能允许远程代码执行。
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-2026-29972

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III. Intelligence Information for CVE-2026-29972

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Exploits & Public PoCs for CVE-2026-29972 (1)

Other References for CVE-2026-29972 (1)

Same Patch Batch · n/a · 2026-05-08 · 40 CVEs total

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CVE-2026-8121 4.3 MEDIUM Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service
CVE-2026-8120 4.3 MEDIUM Open5GS NSSF nnssf-handler.c denial of service
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CVE-2026-37431 Beauty Parlour Management System SQL注入漏洞
CVE-2026-38360 dash-uploader 路径遍历漏洞
CVE-2026-29975 Lightweight JSON text parser 安全漏洞
CVE-2026-29974 minmea 安全漏洞

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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Same vendor: n/a

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