PT-2022-17970 · Tp Link · Tp-Link Tl-Wr840N

Published 2022-03-28 · Updated 2022-06-05 · CVE-2022-26639

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TP-LINK TL-WR840N(ES) version V6.20

Description A buffer overflow issue was discovered via the DNSServers parameter.

Recommendations For TP-LINK TL-WR840N(ES) version V6.20, avoid using the DNSServers parameter until a fix is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2022-26639

Affected Products

Tp-Link Tl-Wr840N

References · 4

• 🔥 https://github.com/Quadron-Research-Lab/Hardware-IoT/blob/main/tp-link%20tl-wr840n_DNSServers%3D.pdf · Exploit
• https://osv.dev/vulnerability/CVE-2022-26639 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-26639 · Security Note
• https://t.me/cibsecurity/39692 · Telegram Post