CVE-2019-17147

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 13.7%, top 4% 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
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 14%CVSS: 8.8Exploit: NoneExposed: 0

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

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length static buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-8457.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
96.1%
KEV
Not listed

Published

January 7, 2020

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 42× 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. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:41 UTCEG score recompute
  3. 2026-07-22 22:21 UTCEG score recompute
  4. 2026-07-22 14:05 UTCEPSS rescore
  5. 2026-07-21 15:22 UTCEPSS rescore
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  7. 2026-07-20 17:04 UTCEPSS rescore
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  16. 2026-07-13 22:27 UTCEPSS rescore
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  21. 2026-07-11 08:24 UTCEPSS rescore
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  25. 2026-07-07 13:43 UTCEPSS rescore
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  3. 2026-07-04 06:28 UTCEPSS rescore
  4. 2026-07-01 15:03 UTCEPSS rescore
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  6. 2026-06-30 23:20 UTCEPSS rescore
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  11. 2026-06-27 03:06 UTCEPSS rescore
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  18. 2026-06-22 14:23 UTCEPSS rescore
  19. 2026-06-21 01:57 UTCEPSS rescore
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  21. 2026-06-19 19:23 UTCEPSS rescore
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  23. 2026-06-18 17:50 UTCEPSS rescore
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  26. 2026-06-15 17:45 UTCEPSS rescore
  27. 2026-06-14 23:15 UTCEPSS rescore
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  29. 2026-06-13 22:58 UTCEPSS rescore
  30. 2026-06-12 23:09 UTCEPSS rescore
  31. 2026-06-11 13:58 UTCEPSS rescore
  32. 2026-06-10 22:16 UTCEPSS rescore
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  36. 2026-06-05 22:45 UTCEPSS rescore
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  40. 2026-06-04 13:10 UTCEPSS rescore
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  42. 2026-06-02 20:11 UTCEPSS rescore
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  44. 2026-06-01 13:50 UTCEPSS rescore
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  46. 2026-05-31 22:29 UTCEPSS rescore
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  48. 2026-05-31 00:14 UTCEPSS rescore
  49. 2026-05-31 00:14 UTCEPSS rescore
  50. 2026-05-29 13:42 UTCEPSS rescore
  51. 2026-05-28 13:43 UTCEPSS rescore
  52. 2026-05-27 13:38 UTCEPSS rescore
  53. 2026-05-27 09:33 UTCEG score recompute
  54. 2026-05-27 09:33 UTCGHSA enrichment
  55. 2026-05-26 13:42 UTCEPSS rescore
  56. 2026-05-26 13:42 UTCEPSS rescore
  57. 2026-05-26 07:17 UTCEPSS rescore
  58. 2026-05-26 07:17 UTCEPSS rescore
  59. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCimnot-ye/CVE-2019-17147
    First seen Jun 9, 2025
    Open source ↗
  • GitHub PoCDrmnSamoLiu/CVE-2019-17147_Practice_Material
    First seen Jan 16, 2022

    This repo contains dumped flash partitions with firmware version vulnerable to CVE-2019-17147, and some useful binaries to downgrade and debug your WR841N router.

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-17147?
CVE-2019-17147 is a high vulnerability published on January 7, 2020. This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host…
When was CVE-2019-17147 disclosed?
CVE-2019-17147 was first published in the National Vulnerability Database on January 7, 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-2019-17147 actively exploited?
CVE-2019-17147 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-17147?
CVE-2019-17147 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2019-17147?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-17147, 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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