Buffer overflow in TP-Link Tl-Wa1201

CVE-2021-35004

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link TL-WA1201 1.0.1 Build 20200709 rel.66244(5553) wireless access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. A crafted DNS message can trigger an overflow of a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14656.

Vulnerability class: Buffer Overflow

Published · last modified .

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: 0.077 (94.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-35004: held from 0.077 to 0.077.

EPSS over last 30 days · oldest: 0.077 · newest: 0.077 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-35004?
CVE-2021-35004 is a critical-severity vulnerability in TP-Link Tl-Wa1201, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2022-01-21.
How severe is CVE-2021-35004?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-35004 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.