CVE-2020-25759

An issue was discovered on D-Link DSR-250 3.17 devices. Certain functionality in the Unified Services Router web interface could allow an authenticated attacker to execute arbitrary commands, due to a lack of validation of inputs provided in multipart HTTP POST requests.

Published: 2020-12-15 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-25759 is rated Moderate Risk (64.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.27%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-25759

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.45% 2.27% +0.82%
2 2025-11-21 3.73% 1.45% -2.28%
3 2025-11-18 — 3.73% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-25759

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2020-25759

Affected software / configurations for CVE-2020-25759

Vendor Product Version Raw CPE
dlink dsr-150_firmware <= 3.17 cpe:2.3:o:dlink:dsr-150_firmware:*:*:*:*:*:*:*:*
dlink dsr-150n_firmware <= 3.17 cpe:2.3:o:dlink:dsr-150n_firmware:*:*:*:*:*:*:*:*
dlink dsr-250_firmware <= 3.17 cpe:2.3:o:dlink:dsr-250_firmware:*:*:*:*:*:*:*:*
dlink dsr-250n_firmware <= 3.17 cpe:2.3:o:dlink:dsr-250n_firmware:*:*:*:*:*:*:*:*
dlink dsr-500_firmware <= 3.17 cpe:2.3:o:dlink:dsr-500_firmware:*:*:*:*:*:*:*:*
dlink dsr-500n_firmware — cpe:2.3:o:dlink:dsr-500n_firmware:*:*:*:*:*:*:*:*
dlink dsr-500ac_firmware <= 3.17 cpe:2.3:o:dlink:dsr-500ac_firmware:*:*:*:*:*:*:*:*
dlink dsr-1000_firmware <= 3.17 cpe:2.3:o:dlink:dsr-1000_firmware:*:*:*:*:*:*:*:*
dlink dsr-1000n_firmware <= 3.17 cpe:2.3:o:dlink:dsr-1000n_firmware:*:*:*:*:*:*:*:*
dlink dsr-1000ac_firmware <= 3.17 cpe:2.3:o:dlink:dsr-1000ac_firmware:*:*:*:*:*:*:*:*

References for CVE-2020-25759

cvelogic Threat Intelligence