CVE-2025-8844: nasm netwide assember Improper Resource Shutdown or Release
Vulnerability summary
CVE-2025-8844 is a medium (CVSS 5.5) Improper Resource Shutdown or Release vulnerability in nasm netwide assember. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.3% of scored vulnerabilities. 5 public exploits are recorded.
Timeline
- 11-08-2025PublishedVulnerability first disclosed.
- 11-08-2025Last modifiedVulnerability information updated.
Description
A vulnerability was determined in NASM Netwide Assember 2.17rc0. This vulnerability affects the function parse_smacro_template of the file preproc.c. The manipulation leads to null pointer dereference. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
CVSS metrics
10 scores · 4 sources · 4 versions- OSV · UbuntuEcosystem advisory · calculated4.8MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- NVDNIST1.9LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:XDiffers
- CVE.orgCNA3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:RDiffers
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST1.7LowAV:L/AC:L/Au:S/C:N/I:N/A:P
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
+0.01 pp
From 0.26% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
5 foundExploit Reference (drive.google.com)
Maturity: unknown
Exploit Reference (vuldb.com)
Maturity: unknown
Exploit Reference (vuldb.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Nasm2 products
- netwide assember2.17rc0
- netwide_assembler2.17:rc0
Debian1 product
- nasmAll versions (No fix recorded)
Ubuntu1 product
- nasmAll versions (No fix recorded)
3 vendors · 4 products
