Vulnerability · CVE-2025-8842
A vulnerability has been found in NASM Netwide Assember 2.17rc0.
Published Aug 11, 2025 · catalog updated Aug 11, 2025 · NASM Netwide Assember
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-8842. EPSS is 0.24%. Act only if a listed version of NASM Netwide Assember is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-8846 · Medium
- CVE-2025-8845 · Medium
- CVE-2025-8844 · Medium
- CVE-2025-8843 · Medium
- Severity
- Medium4.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.24%
- Remediation
- Vendor / distro source
- Affected products
- vendor NASM Netwide Assember 2.17rc0
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor NASM Netwide Assember 2.17rc02.17rc0
How to fix CVE-2025-8842
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 2.17rc0
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-8842. EPSS is 0.24%. Act only if a listed version of NASM Netwide Assember is installed.
Which versions are affected?
Compare what you have installed with NASM Netwide Assember 2.17rc0 2.17rc0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 11, 2025 · EUVD
Detected
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Aug 11, 2025 · EUVD
Updated
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Sources
- CVE.orgVulnerability recordCVE-2025-8842
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-8842
30-day exploitation probability 0.24%
first.org - EUVDVulnerability recordEUVD-2025-24140
A vulnerability has been found in NASM Netwide Assember 2.17rc0. Affected by this issue is the function do_directive of the file preproc.c. The manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be us
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 23, 2026
- CVE.orgOct 21, 2026
- EUVDOct 20, 2026