CVE-2022-29402

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Published May 25, 2022 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed

Description

TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. This vulnerability allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:tp-link:tl-wr840n_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:tp-link:tl-wr840n:6.20:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:tp-link:tl-wr840n_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:tp-link:tl-wr840n:5.0:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2022-33741	TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. This vulnerability allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.

Metrics

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.429% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://k4m1ll0.com/cve-tplink-tlwr840N-uart-shell.html

History

No history.

Subscriptions

Tp-link Tl-wr840n Tl-wr840n Firmware

Weaknesses

CWE-306

Sources

CVE record Updated: Aug 3, 2024, 6:17 AM

Status: PUBLISHED
Assigner: mitre
Published: May 25, 2022, 5:24 PM
Updated: Aug 3, 2024, 6:17 AM
Reserved: Apr 16, 2022, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:40 AM

Status: Modified
Published: May 25, 2022, 6:15 PM
Modified: Jun 17, 2026, 4:40 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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