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CVE-2019-19825

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the...

Basic Information

CVE State
PUBLISHED
Reserved Date
December 16, 2019
Published Date
January 27, 2020
Last Updated
August 05, 2024
Vendor
n/a
Product
n/a
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.
Tags
nuclei_scanner

CVSS Scores

CVSS v3.1

9.8 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploit Status

Exploited in the Wild
Yes (2025-11-27 00:00:00 UTC) Source

References

https://sploit.tech http://seclists.org/fulldisclosure/2020/Jan/36 http://packetstormsecurity.com/files/156083/Realtek-SDK-Information-Disclosure-Code-Execution.html http://seclists.org/fulldisclosure/2020/Jan/38

Known Exploited Vulnerability Information

Source Added Date
The Shadowserver (via CIRCL) 2025-11-27 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-19825.yaml 2026-06-01 15:34:27 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • Detected by Nuclei