Buffer overflow in TP-Link Tl-Wr841n
CVE-2020-8423
A buffer overflow in the httpd daemon on TP-Link TL-WR841N V10 (firmware version 3.16.9) devices allows an authenticated remote attacker to execute arbitrary code via a GET request to the page for the configuration of the Wi-Fi network.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.093 (95.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.093 · newest: 0.093 · change: 0.000
Affected products
- TP-Link Tl-Wr841n — versions v10
- TP-Link Tl-Wr841n Firmware — versions 3.16.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tp-link.com/us/security (Vendor Advisory)
- ktln2.org/2020/03/29/exploiting-mips-router/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8423?
- CVE-2020-8423 is a high-severity vulnerability in TP-Link Tl-Wr841n, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.2/10. Published 2020-04-02.
- How severe is CVE-2020-8423?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2020-8423 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.