CVE-2019-19825

CRITICAL
9.8
CVSS Score
Published: January 27, 2020 at 04:50 PM UTC
Updated: June 17, 2026 at 02:27 AM UTC
16 products affected across 1 vendorA3002RU FirmwareA702R FirmwareN200RE Firmware

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Severity
CRITICAL9.8
Exploit prediction
EPSS 30%

Description

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the boafrm/formLogin URI, leading to a CAPTCHA bypass. (Also, the CAPTCHA text is not needed once the attacker has determined valid credentials. The attacker can perform router actions via HTTP requests with Basic Authentication.) 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, and N100RE through 3.4.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.0.0
totolink-a3002ru (same device)
v ≤ 2.1.3
totolink-a702r (same device)
v ≤ 3.4.0
totolink-n100re (same device)
v ≤ 3.4.0
totolink-n150rt (same device)
v ≤ 2.1.6
totolink-n301rt (same device)
v ≤ 3.4.0
totolink-n302r (same device)
v ≤ 3.4.0
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jan/36
Mailing Listx_refsource_FULLDISCThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jan/38
x_refsource_MISCExploitThird Party Advisory
https://sploit.tech

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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