How severe is CVE-2021-3708?

CVE-2021-3708 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3708 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3708?

CVE-2021-3708 affects Dlink Dsl-2750u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3708?

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.

When was CVE-2021-3708 published?

CVE-2021-3708 was published on 2021-08-16 and last updated on 2026-06-17.

CVE-2021-3708

CVE-2021-3708 is a high-severity vulnerability in Dlink Dsl-2750u Firmware with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 25% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 25% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Dlink Dsl-2750u Firmware
Published: 2021-08-16
Last modified: 2026-06-17

Description

D-Link router DSL-2750U with firmware vME1.16 or prior versions is vulnerable to OS command injection. An unauthenticated attacker on the local network may exploit this, with CVE-2021-3707, to execute any OS commands on the vulnerable device.

Frequently asked questions

What is CVE-2021-3708?: D-Link router DSL-2750U with firmware vME1.16 or prior versions is vulnerable to OS command injection. An unauthenticated attacker on the local network may exploit this, with CVE-2021-3707, to execute any OS commands on the vulnerable device.
How severe is CVE-2021-3708?: CVE-2021-3708 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3708 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3708?: CVE-2021-3708 affects Dlink Dsl-2750u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3708?: 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.
When was CVE-2021-3708 published?: CVE-2021-3708 was published on 2021-08-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dsl-2750u_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dsl-2750u Firmware

CVE-2019-1010155 — Critical (CVSS 9.1): D-Link DSL-2750U 1.11 is affected by: Authentication Bypass. The impact is: denial of service and information leakage.…
CVE-2020-13150 — High (CVSS 7.8): D-link DSL-2750U ISL2750UEME3.V1E devices allow approximately 90 seconds of access to the control panel, after a…
CVE-2023-46033 — Medium (CVSS 6.8): D-Link (Non-US) DSL-2750U N300 ADSL2+ and (Non-US) DSL-2730U N150 ADSL2+ are vulnerable to Incorrect Access Control.…
CVE-2021-3707 — Medium (CVSS 5.5): D-Link router DSL-2750U with firmware vME1.16 or prior versions is vulnerable to unauthorized configuration…
CVE-2024-0717 — Medium (CVSS 5.3): A vulnerability classified as critical was found in D-Link DAP-1360, DIR-300, DIR-615, DIR-615GF, DIR-615S, DIR-615T,…
CVE-2024-9792 — Low (CVSS 2.4): A vulnerability classified as problematic has been found in D-Link DSL-2750U R5B017. This affects an unknown part of…

All CVEs affecting Dlink Dsl-2750u Firmware →

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