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.
Tenda W20E QoS Rule Deletion delQos formQOSRuleDel stack-based overflow
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N H H H 7.4 .0047 38.6 —
AFFECTED
Product Versions Fixed
W20E 15.11.0.6(1068_1546_841)_CN_TDC – —
TIMELINE
Aug 14 Reserved by VulDB
Aug 14 Published (CNA: VulDB)
Aug 18 EXPLOIT PUBLISHED — CVE-2026-19823 (Tenda W20E). Public exploit reference added.
Description
A security flaw has been discovered in Tenda W20E 15.11.0.6(1068_1546_841)_CN_TDC. Impacted is the function formQOSRuleDel of the file /goform/delQos of the component QoS Rule Deletion. Performing a manipulation of the argument qosIndex results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 14, 2026 | Reserved | Reserved by VulDB |
| August 14, 2026 | Published | Published (CNA: VulDB) |
| August 18, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-19823 (Tenda W20E). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Tenda | W20E | — | 15.11.0.6(1068_1546_841)_CN_TDC | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19823 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.