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.

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

EPSS: 0.093 (94.9th percentile) — read the EPSS interpretation.

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.

Affected products

Tp-link Tl-wr841n — versions v10
Tp-link Tl-wr841n_firmware — versions 3.16.9
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

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.