How severe is CVE-2020-25757?

CVE-2020-25757 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25757 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25757?

CVE-2020-25757 primarily affects Dlink Dsr-150 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-25757?

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-2020-25757 published?

CVE-2020-25757 was published on 2020-12-15 and last updated on 2026-06-17.

CVE-2020-25757

CVE-2020-25757 is a high-severity vulnerability in Dlink Dsr-150 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 8.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Dlink Dsr-150 Firmware
Published: 2020-12-15
Last modified: 2026-06-17

Description

A lack of input validation and access controls in Lua CGIs on D-Link DSR VPN routers may result in arbitrary input being passed to system command APIs, resulting in arbitrary command execution with root privileges. This affects DSR-150, DSR-250, DSR-500, and DSR-1000AC with firmware 3.14 and 3.17.

Frequently asked questions

What is CVE-2020-25757?: A lack of input validation and access controls in Lua CGIs on D-Link DSR VPN routers may result in arbitrary input being passed to system command APIs, resulting in arbitrary command execution with root privileges. This affects DSR-150, DSR-250, DSR-500, and DSR-1000AC with firmware 3.14 and 3.17.
How severe is CVE-2020-25757?: CVE-2020-25757 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25757 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25757?: CVE-2020-25757 primarily affects Dlink Dsr-150 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-25757?: 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-2020-25757 published?: CVE-2020-25757 was published on 2020-12-15 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:dlink:dsr-150_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-150n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-250_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-250n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-500n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-500ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-1000n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dsr-1000ac_firmware:*:*:*:*:*:*:*:*

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