How severe is CVE-2026-5981?

CVE-2026-5981 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5981 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5981?

CVE-2026-5981 affects Dlink Dir-605l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5981?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5981 have an EU (EUVD) identifier?

Yes. CVE-2026-5981 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21189.

When was CVE-2026-5981 published?

CVE-2026-5981 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-5981

CVE-2026-5981 is a high-severity vulnerability in Dlink Dir-605l Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21189
Weakness: CWE-119
Affected product: Dlink Dir-605l Firmware
Published: 2026-04-09
Last modified: 2026-06-17

Description

A vulnerability has been found in D-Link DIR-605L 2.13B01. This affects the function formAdvFirewall of the file /goform/formAdvFirewall of the component POST Request Handler. Such manipulation of the argument curTime leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Frequently asked questions

What is CVE-2026-5981?: A vulnerability has been found in D-Link DIR-605L 2.13B01. This affects the function formAdvFirewall of the file /goform/formAdvFirewall of the component POST Request Handler. Such manipulation of the argument curTime leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
How severe is CVE-2026-5981?: CVE-2026-5981 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5981 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5981?: CVE-2026-5981 affects Dlink Dir-605l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5981?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5981 have an EU (EUVD) identifier?: Yes. CVE-2026-5981 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21189.
When was CVE-2026-5981 published?: CVE-2026-5981 was published on 2026-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-605l_firmware:2.13b01:*:*:*:*:*:*:*

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