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CVE-2019-17147

HIGH
Published 2020-01-07T23:05:23
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CVSS Score

V3.0
8.8
/10
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.220
probability
of exploitation in the wild

There is a 22.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.955
Higher than 95.5% of all CVEs

Attack Vector Metrics

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

TP-Link

TL-WR841N

Affected Versions:

0.9.1 4.16 v007c.0 Build 180613 Rel.42415n

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-9chw-9f2x-67h9

Advisory Details

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 Scoring

CVSS Score

7.5

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-17147
WEB https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware
WEB https://www.zerodayinitiative.com/advisories/ZDI-19-992

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://www.zerodayinitiative.com/advisories/ZDI-19-992/
https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware
Published: 2020-01-07T23:05:23
Last Modified: 2024-08-05T01:33:17.300Z
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