CVE-2018-20383

Name: CVE-2018-20383
Creator: NVD / NIST
Published: 2018-12-23T21:29:00.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.82%

Last modified Jun 17, 2026

CVE-2018-20383 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. ARRIS DG950A 7.10.145 and DG950S 7.10.145.EURO 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.. EPSS estimates a 1.82% chance of exploitation in the next 30 days.

Description

ARRIS DG950A 7.10.145 and DG950S 7.10.145.EURO 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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.82%

76.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Commscope	Arris Dg950a Firmware	7.10.145
Arris	Dg950s Firmware	7.10.145.euro

References

https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csvThird Party Advisory
https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.htmlExploit, Third Party Advisory
https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csvThird Party Advisory
https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.htmlExploit, Third Party Advisory

Timeline

Published: Dec 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20383?

ARRIS DG950A 7.10.145 and DG950S 7.10.145.EURO 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.

How severe is CVE-2018-20383?

CVE-2018-20383 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.82% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20383?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST