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CVE-2020-21686 Details
Description
A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 7, 2024Exploitation: PocAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.nasm.us/show_bug.cgi?id=3392643 | CVE | ExploitIssue TrackingVendor Advisory |
| https://bugzilla.nasm.us/show_bug.cgi?id=3392643 | [email protected] | ExploitIssue TrackingVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-Other | Weakness Not in a Standard CWE Category | [email protected] |
| CWE-562 | Return of Stack Variable Address | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| nasm netwide assembler | < 2.15.04 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 21, 2024 | CVE Modified | CVE |
| Oct 7, 2024 | CVE Modified | CISA-ADP |
| May 14, 2024 | CVE Modified | [email protected] |
| Aug 25, 2023 | Initial Analysis | [email protected] |