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CVE-2025-8845— NASM Netwide Assember nasm.c assemble_file stack-based overflow

Quick assessment

Affected
NASM Netwide Assember
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.

NASM Netwide Assember是NASM团队的一款汇编器和反汇编器。 NASM Netwide Assember 2.17rc0版本存在安全漏洞，该漏洞源于文件nasm.c中函数assemble_file存在栈缓冲区溢出。

CVSS 5.3 · Medium EPSS 0.27% · P19
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I. Basic Information for CVE-2025-8845

Vulnerability Information
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Vulnerability Title
NASM Netwide Assember nasm.c assemble_file stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in NASM Netwide Assember 2.17rc0. This issue affects the function assemble_file of the file nasm.c. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
NASM Netwide Assember 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NASM Netwide Assember是NASM团队的一款汇编器和反汇编器。 NASM Netwide Assember 2.17rc0版本存在安全漏洞，该漏洞源于文件nasm.c中函数assemble_file存在栈缓冲区溢出。
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
NASM Netwide Assember 2.17rc0 -

II. Public POCs for CVE-2025-8845

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III. Intelligence Information for CVE-2025-8845

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Other References for CVE-2025-8845 (1)

Same Patch Batch · NASM · 2025-08-11 · 5 CVEs total

CVE-2025-8842 5.3 MEDIUM NASM Netwide Assember preproc.c do_directive use after free
CVE-2025-8843 5.3 MEDIUM NASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow
CVE-2025-8846 5.3 MEDIUM NASM Netwide Assember parser.c parse_line stack-based overflow
CVE-2025-8844 3.3 LOW NASM Netwide Assember preproc.c parse_smacro_template null pointer dereference

IV. Related Vulnerabilities

Same product: Netwide Assember
Same vendor: NASM
Same weakness: CWE-121

V. Comments for CVE-2025-8845

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