CVE-2019-3405: In the 3.1.3.64296 and lower version of 360F5, the third party can trigger the device to send a deauth frame b

Q: How do I fix CVE-2019-3405?

360f5 firmware: upgrade to newer than 3.1.3.64296. Exact commands for each OS are on this page.

Q: Is CVE-2019-3405 being exploited?

CVE-2019-3405 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-3405 affect?

CVE-2019-3405 affects 360f5 firmware. Severity is medium (CVSS 5.3). In the 3.1.3.64296 and lower version of 360F5, the third party can trigger the device to send a deauth frame by constructing and sending a specific illegal 802.11 Null Data Frame, which will cause other wireless terminals connected to disco

Q: How urgent is CVE-2019-3405?

Priority 39/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2019-3405 is a medium-severity flaw (CVSS 5.3) affecting 360f5 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the 3.1.3.64296 and lower version of 360F5, the third party can trigger the device to send a deauth frame by constructing and sending a specific illegal 802.11 Null Data Frame, which will cause other wireless terminals connected to disconnect from the wireless, so as to attack the router wireless by DoS. At present, the vulnerability has been effectively handled, and users can fix the vulnerability after updating the firmware version.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Published	2021-01-11
Last modified	2026-06-17

Publisher (CNA): 360 Security Technology, Inc. · Vendor: 360

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

Am I affected?

Timeline

2021-01-11 16:15 UTCPublished CVE record published
2026-06-17 02:35 UTCUpdated Record last modified

360 360f5 firmware UPGRADE

Affected: <= 3.1.3.64296

Fixed in: newer than 3.1.3.64296

Safe to downgrade to: no unaffected older release

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-2019-3405?

360f5 firmware: upgrade to newer than 3.1.3.64296. Exact commands for each OS are on this page.

Is CVE-2019-3405 being exploited?

CVE-2019-3405 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-2019-3405 affect?

CVE-2019-3405 affects 360f5 firmware. Severity is medium (CVSS 5.3). In the 3.1.3.64296 and lower version of 360F5, the third party can trigger the device to send a deauth frame by constructing and sending a specific illegal 802.11 Null Data Frame, which will cause other wireless terminals connected to disco

How urgent is CVE-2019-3405?

Priority 39/100. Remotely exploitable, no login, no user action

References

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