CVE-2019-13481: An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01

This week

HIGH 8.8MITIGATE

CVE-2019-13481 is a high-severity flaw (CVSS 8.8) affecting dir-818lw firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01. There is a command injection in HNAP1 (exploitable with Authentication) via shell metacharacters in the MTU field to SetWanSettings.

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	8.2% (top 5%)
CISA exploited list	No
Weakness	CWE-78
Published	2019-07-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dlink

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

Am I affected?

Timeline

2019-07-10 20:15 UTCPublished CVE record published
2026-06-17 02:16 UTCUpdated Record last modified

dlink dir-818lw firmware MITIGATE

Affected: 2.06 betab01

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.06

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-2019-13481?

dir-818lw firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-13481 being exploited?

CVE-2019-13481 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-2019-13481 affect?

CVE-2019-13481 affects dir-818lw firmware. Severity is high (CVSS 8.8). An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01. There is a command injection in HNAP1 (exploitable with Authentication) via shell metacharacters in the MTU field to SetWanSettings.

How urgent is CVE-2019-13481?

Priority 60/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2025-9003 LOW 3.5 MITIGATE A vulnerability has been found in D-Link DIR-818LW 1.04
CVE-2025-7553 MEDIUM 4.7 UPGRADE A vulnerability classified as critical has been found in D-Link DIR-818LW up to 20191215
CVE-2019-13482 HIGH 8.8 MITIGATE An issue was discovered on D-Link DIR-818LW devices with firmware 2.06betab01
CVE-2019-12787 HIGH 8.8 MITIGATE An issue was discovered on D-Link DIR-818LW devices from 2.05.B03 to 2.06B01 BETA
CVE-2019-12786 HIGH 8.8 MITIGATE An issue was discovered on D-Link DIR-818LW devices from 2.05.B03 to 2.06B01 BETA

References

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