CVE-2019-19143

MEDIUMNVD 6.16.1—Elevated

6.1

TP-LINK TL-WR849N 0.9.1 4.16 devices do not require authentication to replace the firmware via a POST request to the cgi/softup URI.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 84.7%
KEV: Not listed

Published

January 27, 2020

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://packetstormsecurity.com/files/156586/TP-Link-TL-WR849N-0.9.1-4.16-Authentication-Bypass.html
cve@mitrehttps://fireshellsecurity.team/hack-n-routers/
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/156586/TP-Link-TL-WR849N-0.9.1-4.16-Authentication-Bypass.html
af854a3a-2127-422b-91ae-364da2661108https://fireshellsecurity.team/hack-n-routers/

Weakness Classification(1)

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

CWE-306Missing Authentication for Critical Function

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 08:36 UTCEG score recompute
2026-05-27 08:36 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-48152
First seen Mar 2, 2020
TL-WR849N 0.9.1 4.16 - Authentication Bypass (Upload Firmware)
Open source ↗

Frequently asked(5)

What is CVE-2019-19143?

CVE-2019-19143 is a medium vulnerability published on January 27, 2020. TP-LINK TL-WR849N 0.9.1 4.16 devices do not require authentication to replace the firmware via a POST request to the cgi/softup URI.

When was CVE-2019-19143 disclosed?

CVE-2019-19143 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-2019-19143 actively exploited?

CVE-2019-19143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-19143?

CVE-2019-19143 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2019-19143?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19143, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-19143

Explore →

Is Your Infrastructure Affected by CVE-2019-19143?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2019-19143

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-19143?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)