CVE-2026-19811CWE-119CWE-121

CVE-2026-19811

High · published August 14, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
57.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.00854 · 57.9th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-08-14T11:16Z
References (6)
https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setIpQosRules.md · [email protected]https://vuldb.com/cve/CVE-2026-19811 · [email protected]https://vuldb.com/submit/869425 · [email protected]https://vuldb.com/vuln/389947 · [email protected]https://vuldb.com/vuln/389947/cti · [email protected]https://www.totolink.net/ · [email protected]
EPSS history
Timeline
  • 14 AUG 06:15Z
    TOTOLINK A800R firewall.so cstecgi.cgi setIpQosRules stack-based overflow
    cvelistv5