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CVE Record

CVE-2019-16641: An issue was found on the Ruijie EG-2000 series gateway.

An issue was found on the Ruijie EG-2000 series gateway. There is a buffer overflow in client.so. Consequently, an attacker can use login.php to login to any account, without providing its password. This affects EG-2000SE EG_RGOS 11.1(1)B1.

HighCVSS 8.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This vulnerability affects a Ruijie EG-2000 series gateway build and can let an attacker access accounts without knowing passwords. For a gateway, that creates serious risk because compromise may expose traffic controls, routing, and administrative settings.

Executive priority

Treat this as high priority where affected gateways are deployed, especially if management access is broadly reachable. The main decision is whether an official fix exists; if not, exposure reduction and replacement planning matter.

Technical view

CVE-2019-16641 is reported as a stack buffer overflow in client.so affecting Ruijie EG-2000SE EG_RGOS 11.1(1)B1. The CVE description says the flaw can allow account login without a password. The CVSS vector is local, but the described impact involves the web login flow.

Likely exposure

Likely exposure is limited to organizations running Ruijie EG-2000SE with EG_RGOS 11.1(1)B1. The source bundle does not provide CPEs, a full affected-version range, or confirmation for other EG-2000 models.

Exploitation context

The source bundle does not show CISA KEV listing or cite active exploitation. Public reference material exists, but the provided evidence is not enough to claim exploitation in the wild.

Researcher notes

Evidence is sparse. The CVE lists CWE-121 and high confidentiality, integrity, and availability impact. The affected section is incomplete, while the narrative names EG-2000SE EG_RGOS 11.1(1)B1. The local CVSS attack vector may understate risk if the vulnerable login flow is reachable remotely.

Mitigation direction

  • Identify any Ruijie EG-2000SE gateways and confirm EG_RGOS version.
  • Check Ruijie or support-channel guidance for a fixed firmware or official mitigation.
  • Restrict gateway management access to trusted administrative networks only.
  • Require VPN, ACLs, or firewall controls around the management interface.
  • Review administrator accounts and remove unused or unexpected accounts.
  • Increase monitoring for abnormal gateway login or configuration activity.

Validation and detection

  • Inventory edge gateways and record model, firmware, and management exposure.
  • Confirm whether EG-2000SE EG_RGOS 11.1(1)B1 is present.
  • Review access logs for unusual successful logins or administrative changes.
  • Verify management interfaces are not reachable from untrusted networks.
  • Document vendor guidance status and planned remediation owner.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-121: Exact CWE lookup

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2019-16641 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.4 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.4CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.4High
CVSS 3.1 vector shape for CVE-2019-16641Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-121

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.