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Fencer Vulns
medium 5.5

CVE-2020-26567 json

An issue was discovered on D-Link DSR-250N before 3.17B devices.

published 2020-10-08 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19112

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
15.8%
EPSS 15.8% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

An issue was discovered on D-Link DSR-250N before 3.17B devices. The CGI script upgradeStatusReboot.cgi can be accessed without authentication. Any access reboots the device, rendering it therefore unusable for several minutes.

Patch / fix

  • dlink dsr-250n_firmware 3.17b

Timeline

  1. First public exploit (EDB-48863)
  2. Published

Exploit prediction

15.77% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-48863 D-Link DSR-250N 3.12 - Denial of Service (PoC) webapps, 2020-10-08
  • redteam-pentesting.de https://www.redteam-pentesting.de/advisories/rt-sa-2020-002 referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2020/Oct/14 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/159516/D-Link-DSR-250N-Denial-Of-Service.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.