NASM Netwide Assember 2.17rc0 parser.c parse_line stack-based overflow

Summaryinfo

A vulnerability described as critical has been identified in NASM Netwide Assember 2.17rc0. The affected element is the function parse_line of the file parser.c. The manipulation results in stack-based overflow. This vulnerability is known as CVE-2025-8846. Attacking locally is a requirement. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in NASM Netwide Assember 2.17rc0. It has been classified as critical. Affected is the function parse_line of the file parser.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared for download at bugzilla.nasm.us. This vulnerability is traded as CVE-2025-8846. The exploitability is told to be easy. The attack needs to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at drive.google.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 259926 (Linux Distros Unpatched Vulnerability : CVE-2025-8846), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (259926). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 259926
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8846

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/10/2025 Advisory disclosed
08/10/2025 +0 days VulDB entry created
09/15/2025 +36 days VulDB entry last update

Sourcesinfo

Advisory: 3392938
Status: Not defined

CVE: CVE-2025-8846 (🔒)
GCVE (CVE): GCVE-0-2025-8846
GCVE (VulDB): GCVE-100-319380
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/10/2025 18:02
Updated: 09/15/2025 17:43
Changes: 08/10/2025 18:02 (57), 08/12/2025 09:16 (30), 08/31/2025 15:16 (2), 09/15/2025 17:43 (12)
Complete: 🔍
Submitter: xdcao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #623189: nasm NASM version 2.17rc0 compiled on Jul 20 2025 and the newest master (888d9ab) Memory Corruption (by xdcao)

Once again VulDB remains the best source for vulnerability data.

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