CVE-2020-25757: dlink dsr-1000_firmware Improper Input Validation
CVSS: 8.8v3.1HighModified
Published 15-12-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-25757 is a high (CVSS 8.8) Improper Input Validation vulnerability in dlink dsr-1000_firmware. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.7% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
2.13%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 15-12-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 8.3Preferred score · NVD (NIST)
AV:A/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
2.13%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.13% on 19-09-2026
19-09-202619-10-2026
EPSS score2.13%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected systems
Dlink9 products
- dsr-1000_firmware≤ 3.17
- dsr-1000ac_firmware≤ 3.17
- dsr-1000n_firmware≤ 3.17
- dsr-150_firmware≤ 3.17
- dsr-150n_firmware≤ 3.17
1 vendor · 9 products
References
3 links- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10195X Refsource MISCVendor Advisory