What is CVE-2023-31710?

CVE-2023-31710 is a critical-severity vulnerability in TP-Link Archer Ax21, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-01.

How severe is CVE-2023-31710?

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

Buffer overflow in TP-Link Archer Ax21

CVE-2023-31710

TP-Link Archer AX21(US)_V3_1.1.4 Build 20230219 and AX21(US)_V3.6_1.1.4 Build 20230219 are vulnerable to Buffer Overflow.

Vulnerability class: Buffer Overflow

Published 2023-08-01 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

TP-Link Archer Ax21
TP-Link Archer Ax21 Firmware — versions 3.6_1.1.4, 3_1.1.4

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/xiaobye-ctf/My-CVE/tree/main/TP-Link/CVE-2023-31710 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-31710?: CVE-2023-31710 is a critical-severity vulnerability in TP-Link Archer Ax21, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-01.
How severe is CVE-2023-31710?: Critical severity. CVSS v3 base score is 9.8 out of 10.