CVE-2019-19824

Exp

On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available. This allows for full control over the device's internals. This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, N100RE through 3.4.0, and N302RE 2.0.2.

Published: 2020-01-27 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-19824 is rated High Exploit Risk (79.4/100): CVSS High severity, with high exploitation likelihood (EPSS 25.14%, 98th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-19824

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-19824

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 89.53% 25.14% -64.39%
2 2026-05-03 89.71% 89.53% -0.18%
3 2026-04-28 — 89.71% —

Full EPSS history (46 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-19824

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2019-19824

Affected software / configurations for CVE-2019-19824

Vendor Product Version Raw CPE
totolink a3002ru_firmware <= 2.0.0 cpe:2.3:o:totolink:a3002ru_firmware:*:*:*:*:*:*:*:*
totolink a702r_firmware <= 2.1.3 cpe:2.3:o:totolink:a702r_firmware:*:*:*:*:*:*:*:*
totolink n301rt_firmware <= 2.1.6 cpe:2.3:o:totolink:n301rt_firmware:*:*:*:*:*:*:*:*
totolink n302r_firmware <= 3.4.0 cpe:2.3:o:totolink:n302r_firmware:*:*:*:*:*:*:*:*
totolink n300rt_firmware <= 3.4.0 cpe:2.3:o:totolink:n300rt_firmware:*:*:*:*:*:*:*:*
totolink n200re_firmware <= 4.0.0 cpe:2.3:o:totolink:n200re_firmware:*:*:*:*:*:*:*:*
totolink n150rt_firmware <= 3.4.0 cpe:2.3:o:totolink:n150rt_firmware:*:*:*:*:*:*:*:*
totolink n100re_firmware <= 3.4.0 cpe:2.3:o:totolink:n100re_firmware:*:*:*:*:*:*:*:*

References for CVE-2019-19824

cvelogic Threat Intelligence