How severe is CVE-2026-4499?

CVE-2026-4499 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-4499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4499?

CVE-2026-4499 affects Dlink Dir-820lw Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4499?

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-2026-4499 have an EU (EUVD) identifier?

Yes. CVE-2026-4499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13800.

When was CVE-2026-4499 published?

CVE-2026-4499 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-4499

CVE-2026-4499 is a high-severity vulnerability in Dlink Dir-820lw Firmware with a CVSS 3.x base score of 7.3. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13800
Weakness: CWE-78
Affected product: Dlink Dir-820lw Firmware
Published: 2026-03-20
Last modified: 2026-06-17

Description

A vulnerability was determined in D-Link DIR-820LW 2.03. Affected is the function ssdpcgi_main of the component SSDP. Executing a manipulation can lead to os command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2026-4499?: A vulnerability was determined in D-Link DIR-820LW 2.03. Affected is the function ssdpcgi_main of the component SSDP. Executing a manipulation can lead to os command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2026-4499?: CVE-2026-4499 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-4499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4499?: CVE-2026-4499 affects Dlink Dir-820lw Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4499?: 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-2026-4499 have an EU (EUVD) identifier?: Yes. CVE-2026-4499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13800.
When was CVE-2026-4499 published?: CVE-2026-4499 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-820lw_firmware:2.03:*:*:*:*:*:*:*

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