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CVE Record

CVE-2019-15255: Cisco Identity Services Engine Authorization Bypass Vulnerability

A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to bypass authorization and access sensitive information related to the device. The vulnerability exists because the software fails to sanitize URLs before it handles requests. An attacker could exploit this vulnerability by submitting a crafted URL. A successful exploit could allow the attacker to gain unauthorized access to sensitive information.

MediumCVSS 6.5Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Cisco ISE has an authorization bypass in its web management interface. A logged-in remote user could send a crafted URL and view sensitive device-related information they should not be allowed to access. The issue is confidentiality-focused, not described as enabling system takeover or service disruption.

Executive priority

Treat as a moderate confidentiality risk. Prioritize organizations where Cisco ISE manages sensitive network access decisions or where many users can authenticate to the management interface. Patch planning should follow Cisco guidance once affected releases are confirmed.

Technical view

The source describes improper authorization control caused by failure to sanitize URLs before request handling in Cisco Identity Services Engine Software. CVSS 3.0 is 6.5: network-accessible, low complexity, low privileges required, no user interaction, high confidentiality impact, no integrity or availability impact.

Likely exposure

Exposure is likely limited to Cisco ISE deployments where the web-based management interface is reachable by authenticated users. The bundle does not identify specific affected versions, deployment modes, or internet exposure requirements.

Exploitation context

The source states exploitation requires authentication and a crafted URL. The CVE is not marked KEV in the bundle, and no provided source states active exploitation or public exploit availability.

Researcher notes

Evidence is incomplete on affected version ranges and fixed releases in the supplied bundle. Validation should focus on authorization boundaries around management URLs, authenticated roles, and sensitive information exposure without attempting weaponized reproduction.

Mitigation direction

  • Review Cisco advisory for affected releases and fixed software guidance.
  • Apply Cisco-provided updates or remediation when confirmed applicable.
  • Limit ISE management interface access to trusted administrative networks.
  • Review administrative account access while remediation is pending.

Validation and detection

  • Inventory Cisco ISE instances and their software versions.
  • Confirm whether the web management interface is reachable by non-administrative authenticated users.
  • Check Cisco advisory applicability against deployed ISE releases.
  • Review access logs for unusual management-interface URL requests.
Prepared
Confidence
medium
Sources
3

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 · medium confidence lookup

CWE-284: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2019-15255 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
Medium
CVSS
6.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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
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
6.5CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.5Medium
CVSS 3.0 vector shape for CVE-2019-15255Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 Identity Services Engine SoftwareunspecifiedListed
Weakness

CWE details

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