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CVE Record

CVE-2026-20075: Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) and Cisco Prime Infrastructure could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against users of the interface of an affected system. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by inserting malicious code into specific data fields in the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, an attacker must have valid administrative credentials.

MediumCVSS 4.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-20075 is a stored cross-site scripting issue in Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure. An attacker must already have valid administrative credentials, then can store script in interface fields that runs when another user views it. Business impact is limited but relevant for privileged console users and sensitive browser-based data.

Executive priority

Treat as a scheduled remediation item, not an emergency, unless affected systems are broadly accessible or admin accounts are weakly controlled. Prioritize validation because these platforms manage network infrastructure and are attractive post-compromise targets.

Technical view

The web management interface fails to properly validate user-supplied input, enabling authenticated remote stored XSS. The CVSS v3.1 score is 4.8 with high privileges required and user interaction required. Successful exploitation may execute arbitrary script in the affected interface context or access sensitive browser-based information. CWE-79 applies.

Likely exposure

Exposure is limited to organizations running affected Cisco EPNM or Cisco Prime Infrastructure versions, especially where administrative access to the management interface is broadly assigned. Internet exposure is not required, but remote authenticated access to the interface is sufficient.

Exploitation context

The source bundle does not indicate active exploitation, and CISA KEV status is false. Exploitation requires valid administrative credentials and a victim user viewing affected interface content. This is more likely to matter in insider, compromised-admin, or lateral-movement scenarios.

Researcher notes

The provided record names many affected versions but does not include CPEs or explicit fixed versions. Analysis should be anchored to Cisco’s advisory for final applicability and remediation. Avoid assuming unauthenticated access or public exploitation; the vulnerability requires administrative credentials and user interaction.

Mitigation direction

  • Check Cisco’s advisory for affected and fixed release guidance.
  • Upgrade or apply vendor-recommended remediation when available for your deployed version.
  • Restrict management interface access to trusted administrative networks.
  • Limit administrative accounts to users with operational need.
  • Monitor privileged account activity in EPNM and Prime Infrastructure.

Validation and detection

  • Inventory Cisco EPNM and Prime Infrastructure deployments and versions.
  • Compare deployed versions against Cisco’s advisory and CVE record.
  • Confirm management interfaces are not exposed beyond required admin networks.
  • Review administrative user lists for unnecessary privileged accounts.
  • Check web management logs for unusual admin-created or modified fields.
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 · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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
cve · low confidence lookup

CVE-2026-20075 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
Medium
CVSS
4.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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
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
4.8CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.8Medium
CVSS 3.1 vector shape for CVE-2026-20075Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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 Evolved Programmable Network Manager (EPNM)3.0.1, 3.1.2, 1.2, 3.1.1, 3.1.3, 3.1, 3.0.3, 3.0.2, 3.0, 2.2, 1.1, 2.1, 2.0, 4.1, 4.1.1, 4.0.3, 4.0.1, 4.0.2, 4.0, 5.0, 5.0.1, 5.1.1, 5.1, 5.0.2, 5.1.2, 5.1.3, 5.1.4, 6.1.1, 6.1, 6.0.0, 6.0.1, 6.0.2, 7.0.0, 1.2.5, 1.2.6, 2.0.1, 1.2.2, 1.2.3, 1.2.4, 1.2.7, 1.2.1.2, 2.2.1, 2.1.3, 2.0.2, 2.0.3, 2.1.2, 2.0.4, 2.1.1, 5.0.2.5, 5.1.4.3, 6.0.2.1, 6.1.1.1, 5.0.2.1, 5.0.2.2, 5.0.2.3, 5.0.2.4, 5.1.4.1, 5.1.4.2, 2.1.4, 2.2.4, 2.2.3, 2.2.5, 5.1.3.2, 5.1.3.1, 6.0.1.1, 4.1.1.2, 4.1.1.1, 4.0.3.1, 2.0.1.1, 2.1.1.3, 2.1.1.1, 2.1.1.4, 2.0.4.2, 2.0.4.1, 2.1.2.2, 2.1.2.3, 2.0.2.1, 2.1.3.4, 2.1.3.3, 2.1.3.2, 2.1.3.5, 2.2.1.2, 2.2.1.1, 2.2.1.4, 2.2.1.3, 1.2.4.2, 1.2.2.4, 6.0.3, 5.1.4.4, 5.0.2.6, 6.0.3.1, 6.1.2, 6.1.1.2.2, 6.1.2.1, 6.1.2.2, 7.1.1, 7.1.2.1, 7.0.1.3, 7.1.3, 7.1.2, 7.0.1.2, 7.0.1.1, 7.0.1, 7.1.0, 8.0.0, 6.1.2.3, 8.0.0.1, 7.1.3.1, 7.1.4, 8.1.0, 8.1.1, 8.0.1, 8.0.1.1unknown
CiscoCisco Prime Infrastructure3.0.0, 3.1.0, 3.1.5, 2.1, 2.0.0, 3.6.0, 3.7.0, 3.4.0, 3.3.0, 3.2, 3.5.0, 3.2.0-FIPS, 2.2, 3.8.0-FED, 3.9.0, 3.8.0, 3.10.0, 3.1.1, 2.1.2, 2.2.1, 2.2.0, 3.0.2, 3.0.3, 3.0.1, 2.2.2, 2.2.3, 2.1.0, 2.1.1, 3.9.1, 2.0.10, 3.8.1, 3.7.1, 3.5.1, 3.4.2, 3.3.1, 3.1.7, 3.2.1, 3.2.2, 3.1.6, 3.1.2, 3.4.1, 3.1.3, 3.1.4, 3.0.6, 2.2.10, 3.0.4, 3.0.5, 2.1.56, 2.2.4, 2.2.9, 2.2.8, 2.2.5, 2.2.7, 2.0.39, 3.8_DP1, 3.9_DP1, 3.7_DP2, 3.6_DP1, 3.5_DP4, 3.5_DP2, 3.4_DP10, 3.7_DP1, 3.5_DP3, 3.4_DP11, 3.5_DP1, 3.4_DP8, 3.4_DP1, 3.4_DP3, 3.4_DP5, 3.4_DP2, 3.4_DP7, 3.4_DP6, 3.3_DP4, 3.4_DP4, 3.4_DP9, 3.1_DP16, 3.3_DP2, 3.3_DP3, 3.1_DP15, 3.3_DP1, 3.1_DP13, 3.2_DP2, 3.2_DP1, 3.2_DP3, 3.1_DP14, 3.2_DP4, 3.1_DP7, 3.1_DP10, 3.1_DP11, 3.1_DP4, 3.1_DP6, 3.1_DP12, 3.1_DP5, 3.0.7, 3.1_DP9, 3.1_DP8, 3.10_DP1, 3.10.2, 3.10.3, 3.10, 3.10.1, 3.7.1 Update 03, 3.7.1 Update 04, 3.7.1 Update 06, 3.7.1 Update 07, 3.8.1 Update 01, 3.8.1 Update 02, 3.8.1 Update 03, 3.8.1 Update 04, 3.9.1 Update 01, 3.9.1 Update 02, 3.9.1 Update 03, 3.9.1 Update 04, 3.10 Update 01, 3.4.2 Update 01, 3.6.0 Update 04, 3.6.0 Update 02, 3.6.0 Update 03, 3.6.0 Update 01, 3.5.1 Update 03, 3.5.1 Update 01, 3.5.1 Update 02, 3.7.0 Update 03, 2.2.3 Update 05, 2.2.3 Update 04, 2.2.3 Update 06, 2.2.3 Update 03, 2.2.3 Update 02, 2.2.1 Update 01, 2.2.2 Update 03, 2.2.2 Update 04, 3.8.0 Update 01, 3.8.0 Update 02, 3.7.1 Update 01, 3.7.1 Update 02, 3.7.1 Update 05, 3.9.0 Update 01, 3.3.0 Update 01, 3.4.1 Update 02, 3.4.1 Update 01, 3.5.0 Update 03, 3.5.0 Update 01, 3.5.0 Update 02, 3.10.4, 3.10.4 Update 01, 3.10.4 Update 02, 3.10.4 Update 03, 3.10.5, 3.10.6, 3.10.6 Update 01, 3.10.6 Update 02, 3.10.6 Security Update 03unknown
Weakness

CWE details

CWE-79

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

CWE-79 · source CWE mapping

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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