CVE-2026-5983: A vulnerability was determined in D-Link DIR-605L 2.13B01

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HIGH 8.8MITIGATE

CVE-2026-5983 is a high-severity flaw (CVSS 8.8) affecting dir-605l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

Why this priority

High severity
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	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2026-04-09
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: dlink

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-09 22:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

dlink dir-605l firmware MITIGATE

Affected: 2.13b01

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.13b01

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-2026-5983?

dir-605l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-5983 being exploited?

CVE-2026-5983 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-2026-5983 affect?

CVE-2026-5983 affects dir-605l firmware. Severity is high (CVSS 8.8). A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffe

How urgent is CVE-2026-5983?

Priority 49/100. High severity; Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2026-5984 HIGH 8.8 MITIGATE A vulnerability was identified in D-Link DIR-605L 2.13B01
CVE-2026-5979 HIGH 8.8 MITIGATE A vulnerability was detected in D-Link DIR-605L 2.13B01
CVE-2026-5980 HIGH 8.8 MITIGATE A flaw has been found in D-Link DIR-605L 2.13B01
CVE-2026-5981 HIGH 8.8 MITIGATE A vulnerability has been found in D-Link DIR-605L 2.13B01
CVE-2026-5982 HIGH 8.8 MITIGATE A vulnerability was found in D-Link DIR-605L 2.13B01

References

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