Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L N R U N N H 5.5 .0025 15.3 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Aug 13 Reserved by mitre Aug 22 Published (CNA: mitre) Oct 14 ENRICHED — CVE-2020-21047. Received CVSS 5.5 and CPE data from NVD.
The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.
| Date | Event | Detail |
|---|---|---|
| August 13, 2020 | Reserved | Reserved by mitre |
| August 22, 2023 | Published | Published (CNA: mitre) |
| October 14, 2026 | ENRICHED | ENRICHED — CVE-2020-21047. Received CVSS 5.5 and CPE data from NVD. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2020-21047 at cve.org
Weaknesses: CWE-787
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-21047 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
