CVE-2020-19323: An issue was discovered in /bin/mini_upnpd on D-Link DIR-619L 2.06beta devices

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HIGH 7.5REMOTEMITIGATE

CVE-2020-19323 is a high-severity flaw (CVSS 7.5) affecting dir-619l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in /bin/mini_upnpd on D-Link DIR-619L 2.06beta devices. There is a heap buffer overflow allowing remote attackers to restart router via the M-search request ST parameter. No authentication required

Why this priority

High severity
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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-09-11
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

2023-09-11 19:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

dlink dir-619l firmware MITIGATE

Affected: 2.06 beta

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-2020-19323?

dir-619l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-19323 being exploited?

CVE-2020-19323 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-2020-19323 affect?

CVE-2020-19323 affects dir-619l firmware. Severity is high (CVSS 7.5). An issue was discovered in /bin/mini_upnpd on D-Link DIR-619L 2.06beta devices. There is a heap buffer overflow allowing remote attackers to restart router via the M-search request ST parameter. No authentication required

How urgent is CVE-2020-19323?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2026-2056 MEDIUM 5.3 MITIGATE MITIGATE A security vulnerability has been detected in D-Link DIR-605L and DIR-619L 2.06B01/2.13B01
CVE-2026-2055 MEDIUM 5.3 MITIGATE MITIGATE A weakness has been identified in D-Link DIR-605L and DIR-619L 2.06B01/2.13B01
CVE-2026-2054 MEDIUM 5.3 MITIGATE MITIGATE A security flaw has been discovered in D-Link DIR-605L and DIR-619L 2.06B01/2.13B01
CVE-2025-8978 MEDIUM 6.6 MITIGATE A vulnerability was determined in D-Link DIR-619L 6.02CN02
CVE-2025-6617 HIGH 8.8 MITIGATE A vulnerability was found in D-Link DIR-619L 2.06B01 and classified as critical

References

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