PT-2021-7268 · Tp Link · Tp-Link Tl-Wr840N

K4M1Ll0 · Published 2021-09-20 · Updated 2022-06-07 · CVE-2022-29402

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TP-Link TL-WR840N EU version 6.20

Description The issue is related to insecure protections for the UART console in the TP-Link TL-WR840N EU router. This allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.

Recommendations For TP-Link TL-WR840N EU version 6.20, consider disabling the UART console as a temporary workaround until a patch is available. Restrict physical access to the UART port to minimize the risk of exploitation.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

BDU:2022-04739

CVE-2022-29402

Affected Products

Tp-Link Tl-Wr840N

References · 6

• 🔥 https://k4m1ll0.com/cve-tplink-tlwr840N-uart-shell.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-29402 · Security Note
• https://bdu.fstec.ru/vul/2022-04739 · Security Note
• https://t.me/cvenotify/30739 · Telegram Post
• https://t.me/cibsecurity/43355 · Telegram Post
• https://vuldb.com/ru/?id.41681 · Note