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.
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 A800R 4.1.2cu.5137_B20200730 – —
TIMELINE Aug 14 Reserved by VulDB Aug 14 Published (CNA: VulDB) Aug 18 EXPLOIT PUBLISHED — CVE-2026-19811 (TOTOLINK A800R). Public exploit reference added.
A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument Comment results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
| 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-2026-19811 (TOTOLINK A800R). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| TOTOLINK | A800R | — | 4.1.2cu.5137_B20200730 | — |
Authoritative record: CVE-2026-19811 at cve.org
Vendors: totolink
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19811 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.