What is CVE-2018-20392?

CVE-2018-20392 is a critical-severity vulnerability in Cisco Dpc2100, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2018-12-23.

How severe is CVE-2018-20392?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Cisco Dpc2100

CVE-2018-20392

S-A WebSTAR DPC2100 v2.0.2r1256-060303 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Published 2018-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Cisco Dpc2100 — versions 2.1
Cisco Dpc2100 Firmware — versions 2.0.2r1256-060303

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv (Third Party Advisory)
misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.ht… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20392?: CVE-2018-20392 is a critical-severity vulnerability in Cisco Dpc2100, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2018-12-23.
How severe is CVE-2018-20392?: Critical severity. CVSS v3 base score is 9.8 out of 10.