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CVE Record

CVE-2019-1854: Cisco Expressway Series Directory Traversal Vulnerability

A vulnerability in the management web interface of Cisco Expressway Series could allow an authenticated, remote attacker to perform a directory traversal attack against an affected device. The vulnerability is due to insufficient input validation on the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface. A successful exploit could allow the attacker to bypass security restrictions and access the web interface of a Cisco Unified Communications Manager associated with the affected device. Valid credentials would still be required to access the Cisco Unified Communications Manager interface.

MediumCVSS 4.1Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2019-1854 is a Cisco Expressway management web interface flaw. An authenticated remote attacker could use directory traversal to bypass restrictions and reach an associated Cisco Unified Communications Manager web interface. The business risk is limited by required credentials, but exposed management interfaces still deserve prompt review. Exposure is most relevant where Cisco Expressway Series management web interfaces are reachable by authenticated users. The source bundle does not specify all affected versions; one public reference names Cisco Expressway Gateway 11.5.1. Treat as a moderate-priority infrastructure issue. It is not shown as actively exploited here, but it affects communications management infrastructure and could aid unauthorized access paths when administrator credentials are compromised. Mitigation focus: Review Cisco advisory for affected releases and vendor-approved fixes.; Apply Cisco-recommended updates or mitigations for affected Expressway systems.; Restrict management web interface access to trusted administration networks..

Prepared

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

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-22: File access and web shell behavior lookup

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description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell 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-2019-1854 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.1 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

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
3Source 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
4.1CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N2.31.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.1Medium
CVSS 3.0 vector shape for CVE-2019-1854Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N

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
CiscoCisco ExpresswayunspecifiedListed
Weakness

CWE details

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

CWE-22 · source CWE mapping

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.