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CVE Record

CVE-2020-3467: 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 modify parts of the configuration on an affected device. The vulnerability is due to improper enforcement of role-based access control (RBAC) within the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to modify parts of the configuration. The modified configuration could either allow unauthorized devices onto the network or prevent authorized devices from accessing the network. To exploit this vulnerability, an attacker would need valid Read-Only Administrator credentials.

HighCVSS 7.7Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Cisco ISE could let a logged-in read-only administrator change parts of device configuration through the web management interface. That matters because ISE controls network access decisions, so misconfiguration could admit unauthorized devices or block legitimate users. The bundle does not identify active exploitation.

Executive priority

Prioritize remediation for internet-reachable or broadly accessible ISE management interfaces. Business impact can include unauthorized network access or denial of access for legitimate devices, but exploitation requires valid read-only admin credentials.

Technical view

CVE-2020-3467 is an RBAC enforcement flaw in Cisco Identity Services Engine Software’s web-based management interface. An authenticated remote attacker with valid Read-Only Administrator credentials could send a crafted HTTP request and modify parts of configuration. The CVSS v3.0 score is 7.7 high.

Likely exposure

Exposure is limited to Cisco ISE deployments where attackers can reach the web management interface and obtain valid Read-Only Administrator credentials. The source bundle does not include affected version details.

Exploitation context

The vulnerability requires authentication, low privileges, network access, and no user interaction. Sources do not state public exploitation, and the CVE is not marked KEV in the provided bundle.

Researcher notes

The evidence supports improper RBAC enforcement in the Cisco ISE web UI, mapped to CWE-863. Version and fixed-release details are not present in the source bundle, so researchers should use Cisco’s advisory before concluding exposure.

Mitigation direction

  • Review Cisco’s advisory for affected releases and fixed software guidance.
  • Inventory Cisco ISE Software deployments and confirm version exposure.
  • Restrict Read-Only Administrator accounts to users with operational need.
  • Monitor configuration changes performed by low-privileged administrator accounts.
  • Restrict web management access through existing administrative access controls.

Validation and detection

  • Confirm whether Cisco ISE Software is deployed in the environment.
  • Check Cisco’s advisory against installed ISE versions.
  • Review Read-Only Administrator accounts and recent credential use.
  • Audit ISE configuration changes for unexpected modifications.
  • Verify management interface access is limited to authorized networks.
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-863: 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-2020-3467 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.7 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/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
7.7CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H3.14Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.7High
CVSS 3.0 vector shape for CVE-2020-3467Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/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
CiscoCisco Identity Services Engine Softwaren/aListed
Weakness

CWE details

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