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Ios Xe CVE-2025-20338

MEDIUM
Improper Neutralization of Parameter/Argument Delimiters (CWE-141)
2025-09-24 psirt@cisco.com
6.7
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V14 - Configuration Dependency management, component inventory
Impact

CVSS score of 6.0 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required. EPSS exploitation probability: 0.01%.

Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with administrative privileges to execute arbitrary commands as root on the underlying operating. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-141. A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with administrative privileges to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user arguments that are passed to specific CLI commands. An attacker could exploit this vulnerability by logging in to the device CLI with valid administrative (level 15) credentials and using crafted commands at the CLI prompt. A successful exploit could allow the attacker to execute arbitrary commands as root. Affected products include: Cisco Ios Xe.

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Severity by source

NVD PRIMARY 6.7 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
CVSS changed
Sep 26, 2026 - 00:22 NVD
6.0 (MEDIUM) 6.7 (MEDIUM)
CVE Published
Sep 24, 2025 - 18:15 nvd
MEDIUM 6.0

DescriptionNVD

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with administrative privileges to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user arguments that are passed to specific CLI commands. An attacker could exploit this vulnerability by logging in to the device CLI with valid administrative (level 15) credentials and using crafted commands at the CLI prompt. A successful exploit could allow the attacker to execute arbitrary commands as root.

Executive ViewAI

Why It Matters

CVE-2025-20338 presents moderate security risk rated CVSS 6.0. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
Low

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:cisco:ios_xe:3.5.0e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.0sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.1e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.1sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.2e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.2sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.3e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.3sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.4sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.5sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.6sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.7sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.5.8sq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.0e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.1e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.2ae:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.2e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.3e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.4e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.5ae:*:*:*:*:*:*:*
+ 354 more

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