TP-Link

CVE-2024-21833: Multiple TP-LINK products allow a network-adjacent unauthenticated attacker with access to the product to execute arb…

Is it exploited?

Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of 29 Oct 2026.

VulnCheck KEV lists it since 10 Apr 2026. It cites 1 public report, the first from 10 Apr 2026.

ctrlaltintel.com

How likely is exploitation in the next 30 days?

1.1%

EPSS score, percentile 64.6 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

8.8 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

firmware versions prior to "Archer AX3000(JP)_V1_1.1.2 Build 20231115"
firmware versions prior to "Archer AX5400(JP)_V1_1.1.2 Build 20231115"
firmware versions prior to "Archer AXE75(JP)_V1_231115"
firmware versions prior to "Deco X50(JP)_V1_1.4.1 Build 20231122"
firmware versions prior to "Deco XE200(JP)_V1_1.2.5 Build 20231120"

Versions by product

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; VulnCheck KEV, as of 30 Oct 2026; FIRST EPSS, as of 30 Oct 2026; CVE List, as of 30 Oct 2026. About the data.

Description

Multiple TP-LINK products allow a network-adjacent unauthenticated attacker with access to the product to execute arbitrary OS commands. The affected device, with the initial configuration, allows login only from the LAN port or Wi-Fi.

Source: CVE List, as of 30 Oct 2026. About the data.

What to do

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of 30 Oct 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (5 products)

TP-Link Archer AX3000
Status	Versions
Affected	firmware versions prior to "Archer AX3000(JP)_V1_1.1.2 Build 20231115"

TP-Link Archer AX5400
Status	Versions
Affected	firmware versions prior to "Archer AX5400(JP)_V1_1.1.2 Build 20231115"

TP-Link Archer AXE75
Status	Versions
Affected	firmware versions prior to "Archer AXE75(JP)_V1_231115"

TP-Link Deco X50
Status	Versions
Affected	firmware versions prior to "Deco X50(JP)_V1_1.4.1 Build 20231122"

TP-Link Deco XE200
Status	Versions
Affected	firmware versions prior to "Deco XE200(JP)_V1_1.2.5 Build 20231120"

Source: CVE List, as of 30 Oct 2026. About the data.

Weakness

CWE-78

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

Date	Event
10 Jan 2024	CVE record published
16 Jun 2025	CVE record last updated

References

Known exploited TP-Link vulnerabilities

CVE-2023-50224: TP-Link TL-WR841N Authentication Bypass by Spoofing Vulnerability (added 3 Sep 2025)
CVE-2025-9377: TP-Link Archer C7(EU) and TL-WR841N/ND(MS) OS Command Injection Vulnerability (added 3 Sep 2025)
CVE-2020-24363: TP-link TL-WA855RE Missing Authentication for Critical Function Vulnerability (added 2 Sep 2025)
CVE-2023-33538: TP-Link Multiple Routers Command Injection Vulnerability (added 16 Jun 2025)
CVE-2023-1389: TP-Link Archer AX-21 Command Injection Vulnerability (added 1 May 2023)