HOMEVULNERABILITIESCVE-2018-20383
CRITICAL

CVE-2018-20383

CWE-522Published: December 23, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-20383 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

arris1 product(s)
dg950s firmware
commscope3 product(s)
arris dg950a firmwarearris dg950aarris dg950s
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv
ADVISORYhttps://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html
ADVISORYhttps://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv
ADVISORYhttps://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html

All References (4)

→
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

Quick Facts

CVE IDCVE-2018-20383
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-522
CISA KEVNo
Affected2 vendor(s)
PublishedDec 23, 2018

Related CVEs (CWE-522)

CVE-2024-12799
10.0
CVE-2026-29128
10.0
CVE-2021-36783
9.9
CVE-2019-1384
9.9
CVE-2025-0867
9.9
CVE-2026-56843
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-20383 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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