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 N H N N U H H H 8.1 .0912 95.3 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Oct 14 Reserved by mitre Oct 14 Published (CNA: mitre) Oct 8 ENRICHED — CVE-2019-17543. Received CVSS 8.1 and CPE data from NVD.
LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."
| Date | Event | Detail |
|---|---|---|
| October 14, 2019 | Reserved | Reserved by mitre |
| October 14, 2019 | Published | Published (CNA: mitre) |
| October 8, 2026 | ENRICHED | ENRICHED — CVE-2019-17543. Received CVSS 8.1 and CPE data from NVD. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2019-17543 at cve.org
Weaknesses: CWE-787
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-17543 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.
