High severity · published Aug 11, 2025
CVE-2025-8845
NASM Netwide Assember nasm.c assemble_file stack-based overflow
7.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
Netwide Assember · NASM
2.17rc0 · source: vendor
NA
Netwide Assembler · Nasm
2.17 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-8845
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-8845
Exploit
https://bugzilla.nasm.us/show_bug.cgi?id=3392937
Exploit
https://drive.google.com/file/d/1pEQb6lcdohWV53DzPPU7kaCCNg-qAaau/view?usp=drive_link
Permissions Required
https://vuldb.com/?ctiid.319379
Third Party Advisory
https://vuldb.com/?id.319379
Exploit
https://vuldb.com/?submit.623188
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