How severe is CVE-2026-2120?

CVE-2026-2120 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-2120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2120?

CVE-2026-2120 affects Dlink Dir-823x Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2120?

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-2026-2120 have an EU (EUVD) identifier?

Yes. CVE-2026-2120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5826.

When was CVE-2026-2120 published?

CVE-2026-2120 was published on 2026-02-08 and last updated on 2026-06-17.

CVE-2026-2120

CVE-2026-2120 is a high-severity vulnerability in Dlink Dir-823x Firmware with a CVSS 3.x base score of 7.2. 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 7.2)
CVSS v2: 8.3
CVSS v4: 7.3
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5826
Weakness: CWE-78
Affected product: Dlink Dir-823x Firmware
Published: 2026-02-08
Last modified: 2026-06-17

Description

A vulnerability was identified in D-Link DIR-823X 250416. This affects an unknown function of the file /goform/set_server_settings of the component Configuration Parameter Handler. The manipulation of the argument terminal_addr/server_ip/server_port leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.

Frequently asked questions

What is CVE-2026-2120?: A vulnerability was identified in D-Link DIR-823X 250416. This affects an unknown function of the file /goform/set_server_settings of the component Configuration Parameter Handler. The manipulation of the argument terminal_addr/server_ip/server_port leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.
How severe is CVE-2026-2120?: CVE-2026-2120 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-2120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2120?: CVE-2026-2120 affects Dlink Dir-823x Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2120?: 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-2026-2120 have an EU (EUVD) identifier?: Yes. CVE-2026-2120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5826.
When was CVE-2026-2120 published?: CVE-2026-2120 was published on 2026-02-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-823x_firmware:250416:*:*:*:*:*:*:*

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