vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-27346

TP-Link AX1800 Firmware Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

HIGH
8.8
CVSS Score
Published: May 3, 2024 at 01:56 AM UTC
Updated: June 17, 2026 at 05:44 AM UTC
4 products affected across 2 vendorsArcher AX21 FirmwareArcher AX21AX1800

Using AX1800 by TP-Link?

Get instant alerts when new vulnerabilities affect AX1800 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

TP-Link AX1800 Firmware Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AX1800 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of firmware images. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-19703.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Archer AX21 Firmware· TP-Link
95%
1.1.1 build20220603
Archer AX21· TP-Link
90%
1.1.1 build20220603Archer AX21(US)_V3_1.1.1 Build 20220603
tp-link-link-archer-ax21 (same device)
AX1800· Mi
60%
v < 3230219
Affected range stops below 3230219, so it looks safe — our inference, not a vendor statement
AX1800 Firmware· Mi
60%
v < 3230219
Affected range stops below 3230219, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_research-advisoryThird Party Advisory
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-23-377/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHzdi
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card