High severity8.8NVD Advisory· Published Dec 15, 2020· Updated Jun 17, 2026

CVE-2020-25758

Description

An issue was discovered on D-Link DSR-250 3.17 devices. Insufficient validation of configuration file checksums could allow a remote, authenticated attacker to inject arbitrary crontab entries into saved configurations before uploading. These entries are executed as root.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Dlink/Dsr 1000 Firmware
cpe:2.3:o:dlink:dsr-1000_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 1000ac Firmware
cpe:2.3:o:dlink:dsr-1000ac_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 1000n
cpe:2.3:o:dlink:dsr-1000n_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 150 Firmware
cpe:2.3:o:dlink:dsr-150_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 150n Firmware
cpe:2.3:o:dlink:dsr-150n_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 250 Firmware
cpe:2.3:o:dlink:dsr-250_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 250n Firmware
cpe:2.3:o:dlink:dsr-250n_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 500 Firmware
cpe:2.3:o:dlink:dsr-500_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 500ac Firmware
cpe:2.3:o:dlink:dsr-500ac_firmware:*:*:*:*:*:*:*:*
Range: <=3.17
Dlink/Dsr 500n
cpe:2.3:o:dlink:dsr-500n_firmware:*:*:*:*:*:*:*:*
D-Link/DSR-250description
Dlink/Dsr 250llm-create
Range: 3.17

Patches

Vulnerability mechanics

References

supportannouncement.us.dlink.com/announcement/publication.aspxnvdVendor Advisory
www.digitaldefense.com/news/zero-day-vuln-d-link-vpn-routers/nvdThird Party Advisory
www.dlink.com/en/security-bulletinnvdVendor Advisory

News mentions

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cvss	0.572
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000