What is CVE-2023-39747?

CVE-2023-39747 is a critical-severity vulnerability in TP-Link Tl-Wr841n V8, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-21.

How severe is CVE-2023-39747?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in TP-Link Tl-Wr841n V8

CVE-2023-39747

TP-Link WR841N V8, TP-Link TL-WR940N V2, and TL-WR941ND V5 were discovered to contain a buffer overflow via the radiusSecret parameter at /userRpm/WlanSecurityRpm.

Vulnerability class: Buffer Overflow

EPSS: 0.078 (94.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tp-link Tl-wr841n_v8
Tp-link Tl-wr841n_v8_firmware
Tp-link Tl-wr940n_v2
Tp-link Tl-wr940n_v2_firmware
Tp-link Tl-wr941nd_v5
Tp-link Tl-wr941nd_v5_firmware
N/a — versions n/a

Weakness classification (CWE)

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

References

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

Frequently asked questions

What is CVE-2023-39747?: CVE-2023-39747 is a critical-severity vulnerability in TP-Link Tl-Wr841n V8, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-21.
How severe is CVE-2023-39747?: Critical severity. CVSS v3 base score is 9.8 out of 10.