Security readout for executives and security teams
Plain-English summary
This CVE describes NETWAVE MNG6200 devices exposing credentials through specific SNMP requests. If reachable by an attacker, the issue can turn simple network visibility into credential disclosure. Public sources do not provide CVSS, affected version ranges, vendor patch status, or confirmed exploitation.
Executive priority
Treat this as high priority if these devices exist and SNMP is exposed. Credential leakage from infrastructure devices can enable wider compromise, but the public record is incomplete and does not confirm exploitation or patch availability.
Technical view
CVE-2018-20395 reports credential discovery on NETWAVE MNG6200 C4835805jrc12FU121413.cpr devices through two SNMP OIDs: 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. The record does not identify authentication requirements, firmware ranges, CVSS metrics, or a vendor advisory.
Likely exposure
Exposure is most likely where NETWAVE MNG6200 devices are deployed and SNMP is reachable from untrusted networks or broad internal segments. The supplied sources do not confirm other NETWAVE models, firmware versions, or CPEs.
Exploitation context
The source record describes remote credential discovery through SNMP requests. CISA KEV is false in the provided bundle, and no cited source confirms active exploitation. Risk depends heavily on whether SNMP is reachable and whether exposed credentials remain valid.
Researcher notes
The CVE record is sparse. The strongest technical indicator is the two SNMP OIDs associated with credential discovery. Avoid broad product assumptions; validate only the named NETWAVE MNG6200 device context unless additional vendor evidence is found.
Mitigation direction
- Identify any NETWAVE MNG6200 devices in the environment.
- Restrict SNMP access to trusted management networks only.
- Disable SNMP where it is not operationally required.
- Rotate credentials if affected devices were reachable.
- Check vendor or maintainer guidance for patches or configuration changes.
Validation and detection
- Confirm whether NETWAVE MNG6200 devices are present.
- Review firewall rules and ACLs for SNMP reachability.
- Verify only approved management hosts can query SNMP.
- Review monitoring logs for unexpected SNMP queries.
- Document whether the named OIDs are accessible in authorized testing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2018-20395 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csvCVE reference · x_refsource_MISC
- https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.