CVE-2024-57040: TP-Link TL-WR845N devices with firmware TL-WR845N(UN)_V4_200909 and TL-WR845N(UN)_V4_190219 was discovered to

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CRITICAL 9.8REMOTEMITIGATE

CVE-2024-57040 is a critical-severity flaw (CVSS 9.8) affecting tl-wr845n firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TP-Link TL-WR845N devices with firmware TL-WR845N(UN)_V4_200909 and TL-WR845N(UN)_V4_190219 was discovered to contain a hardcoded password for the root account which can be obtained by analyzing downloaded firmware or via a brute force attack through physical access to the router. NOTE: The supplier has stated that this issue was fixed in firmware versions 250401 or later.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-798
Published	2025-02-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tp-link

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-26 22:15 UTCPublished CVE record published
2026-06-17 08:13 UTCUpdated Record last modified

tp-link tl-wr845n firmware MITIGATE

Affected: 190219 · 200909 · 201214

Fixed in: no fixed release known

Safe to downgrade to: a release before 190219

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-57040?

tl-wr845n firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-57040 being exploited?

CVE-2024-57040 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-57040 affect?

CVE-2024-57040 affects tl-wr845n firmware. Severity is critical (CVSS 9.8). TP-Link TL-WR845N devices with firmware TL-WR845N(UN)_V4_200909 and TL-WR845N(UN)_V4_190219 was discovered to contain a hardcoded password for the root account which can be obtained by analyzing downloaded firmware or via a brute force atta

How urgent is CVE-2024-57040?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

TP-Link vulnerabilities

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References

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