CVE-2019-19825

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 29.6%, top 2% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 30%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
98.0%
KEV
Not listed

Published

January 27, 2020

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jul 6, 2026
No patch confirmed yet.
generic

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generic

Full Disclosure: Re: Multiple vulnerabilities in TOTOLINK and other Realtek SDK based routers

http://seclists.org/fulldisclosure/2020/Jan/38
generic

Full Disclosure: Multiple vulnerabilities in TOTOLINK and other Realtek SDK based routers

http://seclists.org/fulldisclosure/2020/Jan/36
generic

Packet Storm

http://packetstormsecurity.com/files/156083/Realtek-SDK-Information-Disclosure-Code-Execution.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:14 UTCEPSS rescore
  2. 2026-07-24 14:14 UTCEPSS rescore
  3. 2026-07-23 14:15 UTCEPSS rescore
  4. 2026-07-23 01:43 UTCEG score recompute
  5. 2026-07-22 22:23 UTCEG score recompute
  6. 2026-07-22 14:05 UTCEPSS rescore
  7. 2026-07-21 15:22 UTCEPSS rescore
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  9. 2026-07-20 17:04 UTCEPSS rescore
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  21. 2026-07-12 05:43 UTCEPSS rescore
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  25. 2026-07-09 19:06 UTCEPSS rescore
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  1. 2026-07-08 15:11 UTCEPSS rescore
  2. 2026-07-06 16:25 UTCEPSS rescore
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  4. 2026-07-04 06:28 UTCEPSS rescore
  5. 2026-07-01 15:03 UTCEPSS rescore
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  7. 2026-06-28 14:04 UTCEPSS rescore
  8. 2026-06-28 04:54 UTCEPSS rescore
  9. 2026-06-28 04:54 UTCEPSS rescore
  10. 2026-06-27 03:06 UTCEPSS rescore
  11. 2026-06-25 13:47 UTCEPSS rescore
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  13. 2026-06-24 14:03 UTCEPSS rescore
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  17. 2026-06-21 01:57 UTCEPSS rescore
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  19. 2026-06-18 17:50 UTCEPSS rescore
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  22. 2026-06-15 17:45 UTCEPSS rescore
  23. 2026-06-14 23:15 UTCEPSS rescore
  24. 2026-06-14 23:15 UTCEPSS rescore
  25. 2026-06-13 22:58 UTCEPSS rescore
  26. 2026-06-12 23:09 UTCEPSS rescore
  27. 2026-06-11 13:58 UTCEPSS rescore
  28. 2026-06-10 22:16 UTCEPSS rescore
  29. 2026-06-10 13:19 UTCEPSS rescore
  30. 2026-06-07 15:23 UTCEPSS rescore
  31. 2026-06-07 15:23 UTCEPSS rescore
  32. 2026-06-06 13:45 UTCEPSS rescore
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  36. 2026-06-04 13:10 UTCEPSS rescore
  37. 2026-06-04 13:10 UTCEPSS rescore
  38. 2026-06-02 20:11 UTCEPSS rescore
  39. 2026-06-02 20:11 UTCEPSS rescore
  40. 2026-06-01 13:50 UTCEPSS rescore
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  42. 2026-05-31 22:29 UTCEPSS rescore
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  44. 2026-05-31 00:14 UTCEPSS rescore
  45. 2026-05-31 00:14 UTCEPSS rescore
  46. 2026-05-29 13:42 UTCEPSS rescore
  47. 2026-05-28 13:43 UTCEPSS rescore
  48. 2026-05-27 13:38 UTCEPSS rescore
  49. 2026-05-27 08:37 UTCEG score recompute
  50. 2026-05-27 08:37 UTCGHSA enrichment
  51. 2026-05-26 13:42 UTCEPSS rescore
  52. 2026-05-26 13:42 UTCEPSS rescore
  53. 2026-05-26 07:17 UTCEPSS rescore
  54. 2026-05-26 07:17 UTCEPSS rescore
  55. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2019/CVE-2019-19825.yaml
    First seen Jan 1, 2019

    TOTOLINK/Realtek Routers - CAPTCHA Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-19825?
CVE-2019-19825 is a critical vulnerability published on January 27, 2020. 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…
When was CVE-2019-19825 disclosed?
CVE-2019-19825 was first published in the National Vulnerability Database on January 27, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-19825 actively exploited?
CVE-2019-19825 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-19825?
CVE-2019-19825 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-19825?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19825, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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