NASM Netwide Assember 2.17rc0 nasm.c assemble_file stack-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in NASM Netwide Assember 2.17rc0. Impacted is the function assemble_file of the file nasm.c. The manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2025-8845. An attack has to be approached locally. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in NASM Netwide Assember 2.17rc0 and classified as critical. This issue affects the function assemble_file of the file nasm.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at bugzilla.nasm.us. The identification of this vulnerability is CVE-2025-8845. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at drive.google.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 259928 (Linux Distros Unpatched Vulnerability : CVE-2025-8845), 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 (259928). Statistical analysis made it clear that VulDB provides the best quality 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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 259928
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8845

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/10/2025 🔍
08/10/2025 +0 days 🔍
09/15/2025 +36 days 🔍

Sourcesinfo

Advisory: 3392937
Status: Not defined

CVE: CVE-2025-8845 (🔍)
GCVE (CVE): GCVE-0-2025-8845
GCVE (VulDB): GCVE-100-319379
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), 08/31/2025 15:16 (2), 09/15/2025 17:43 (41)
Complete: 🔍
Submitter: xdcao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #623188: nasm NASM version 2.17rc0 compiled on Jul 20 2025 and the newest master (888d9ab) Memory Corruption (by xdcao)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!