CVE-2019-1010155: D-Link DSL-2750U 1.11 is affected by: Authentication Bypass

This week

CRITICAL 9.1REMOTEMITIGATE

CVE-2019-1010155 is a critical-severity flaw (CVSS 9.1) affecting dsl-2750u firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

D-Link DSL-2750U 1.11 is affected by: Authentication Bypass. The impact is: denial of service and information leakage. The component is: login. NOTE: Third parties dispute this issues as not being a vulnerability because although the wizard is accessible without authentication, it can't actually configure anything. Thus, there is no denial of service or information leakage

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	8.6% (top 5%)
CISA exploited list	No
Published	2019-07-23
Last modified	2026-06-17

Publisher (CNA): DWF · Vendor: dlink

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

Am I affected?

Timeline

2019-07-23 14:15 UTCPublished CVE record published
2026-06-17 02:09 UTCUpdated Record last modified

dlink dsl-2750u firmware MITIGATE

Affected: 1.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.11

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-2019-1010155?

dsl-2750u firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-1010155 being exploited?

CVE-2019-1010155 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-2019-1010155 affect?

CVE-2019-1010155 affects dsl-2750u firmware. Severity is critical (CVSS 9.1). D-Link DSL-2750U 1.11 is affected by: Authentication Bypass. The impact is: denial of service and information leakage. The component is: login. NOTE: Third parties dispute this issues as not being a vulnerability because although the wizard

How urgent is CVE-2019-1010155?

Priority 66/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

D-Link vulnerabilities

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References

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