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7.8
HIGH CVSS 3.1
CVE-2025-8843
NASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow
Description

A vulnerability was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.

INFO

Published Date :

Aug. 11, 2025, 11:15 a.m.

Last Modified :

Sept. 15, 2025, 2:58 p.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-8843 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nasm netwide_assembler
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 4.0 MEDIUM [email protected]
Solution
Address heap-based buffer overflow in NASM by updating the software and applying security patches.
  • Update NASM to a version that addresses the heap-based buffer overflow.
  • Apply security patches released by the NASM developers.
  • Consult NASM security advisories for specific mitigation steps.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-8843.

URL Resource
https://bugzilla.nasm.us/show_bug.cgi?id=3392934 Exploit Issue Tracking Vendor Advisory
https://drive.google.com/file/d/1JRHWdjW6FGHDV0CMJe8VinmCQ4vP9ZpR/view?usp=drive_link Exploit
https://vuldb.com/?ctiid.319377 Permissions Required VDB Entry
https://vuldb.com/?id.319377 Third Party Advisory VDB Entry
https://vuldb.com/?submit.623185 Exploit Third Party Advisory VDB Entry
https://vuldb.com/?submit.623186 Exploit Third Party Advisory VDB Entry
https://bugzilla.nasm.us/show_bug.cgi?id=3392934 Exploit Issue Tracking Vendor Advisory
https://vuldb.com/?submit.623186 Exploit Third Party Advisory VDB Entry
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-8843 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-8843 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation CAPEC-92: Forced Integer Overflow Forced Integer Overflow

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-8843 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-8843 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 15, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-787
    Added CPE Configuration OR *cpe:2.3:a:nasm:netwide_assembler:2.17:rc0:*:*:*:*:*:*
    Added Reference Type VulDB: https://bugzilla.nasm.us/show_bug.cgi?id=3392934 Types: Exploit, Issue Tracking, Vendor Advisory
    Added Reference Type VulDB: https://drive.google.com/file/d/1JRHWdjW6FGHDV0CMJe8VinmCQ4vP9ZpR/view?usp=drive_link Types: Exploit
    Added Reference Type VulDB: https://vuldb.com/?ctiid.319377 Types: Permissions Required, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?id.319377 Types: Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?submit.623185 Types: Exploit, Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?submit.623186 Types: Exploit, Third Party Advisory, VDB Entry
    Added Reference Type CISA-ADP: https://bugzilla.nasm.us/show_bug.cgi?id=3392934 Types: Exploit, Issue Tracking, Vendor Advisory
    Added Reference Type CISA-ADP: https://vuldb.com/?submit.623186 Types: Exploit, Third Party Advisory, VDB Entry
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 11, 2025

    Action Type Old Value New Value
    Added Reference https://bugzilla.nasm.us/show_bug.cgi?id=3392934
    Added Reference https://vuldb.com/?submit.623186
  • New CVE Received by [email protected]

    Aug. 11, 2025

    Action Type Old Value New Value
    Added Description A vulnerability was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
    Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    Added CVSS V2 (AV:L/AC:L/Au:S/C:P/I:P/A:P)
    Added CWE CWE-119
    Added CWE CWE-122
    Added Reference https://bugzilla.nasm.us/show_bug.cgi?id=3392934
    Added Reference https://drive.google.com/file/d/1JRHWdjW6FGHDV0CMJe8VinmCQ4vP9ZpR/view?usp=drive_link
    Added Reference https://vuldb.com/?ctiid.319377
    Added Reference https://vuldb.com/?id.319377
    Added Reference https://vuldb.com/?submit.623185
    Added Reference https://vuldb.com/?submit.623186
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.8
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact