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Fencer Vulns
critical 9.8

CVE-2017-11502 json

Technicolor DPC3928AD DOCSIS devices allow remote attackers to read arbitrary files via a request starting with "GET /../" on TCP port 4321.

published 2017-07-20 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3120

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.1%
EPSS 7.1% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

Technicolor DPC3928AD DOCSIS devices allow remote attackers to read arbitrary files via a request starting with "GET /../" on TCP port 4321.

Timeline

  1. First public exploit (EDB-44070)
  2. Published

Exploit prediction

7.12% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-44070 Cisco DPC3928 Router - Arbitrary File Disclosure webapps, 2017-05-10
  • blogs.securiteam.com https://blogs.securiteam.com/index.php/archives/2911#more-2911 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.