Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
QNAP Network Attached Storage (NAS)
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L R C L L N 5.4 .1771 96.9 YES
AFFECTED
Product Versions Fixed
QTS unspecified – —
QTS unspecified – —
QTS unspecified – —
QTS unspecified – —
QTS unspecified – —
TIMELINE
Dec 7 Reserved by qnap
May 24 Added to CISA KEV, remediation due 2022-06-14
May 24 Published (CNA: qnap)
Aug 13 RESCORED — CVE-2018-19943 (QNAP Systems Inc. QTS). CVSS 8 → 5.4 (NVD).
Description
If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. QNAP has already fixed these issues in the following QTS versions. QTS 4.4.2.1270 build 20200410 and later QTS 4.4.1.1261 build 20200330 and later QTS 4.3.6.1263 build 20200330 and later QTS 4.3.4.1282 build 20200408 and later QTS 4.3.3.1252 build 20200409 and later QTS 4.2.6 build 20200421 and later
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| December 7, 2018 | Reserved | Reserved by qnap |
| May 24, 2022 | KEV ADDED | Added to CISA KEV, remediation due 2022-06-14 |
| May 24, 2022 | Published | Published (CNA: qnap) |
| August 13, 2026 | RESCORED | RESCORED — CVE-2018-19943 (QNAP Systems Inc. QTS). CVSS 8 → 5.4 (NVD). |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-19943 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 Wednesday, August 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.