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CVE-2025-20311

Vulnerability in Cisco Ios Xe

CVSS score

7.4

EPSS probability

%0.2

Risk score

0.0

Published

1 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2025-20311 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2025-20311 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1ciscoios xe View
2ciscoios xe View
3ciscoios xe View
4ciscoios xe View
5ciscoios xe View
6ciscoios xe View
7ciscoios xe View
8ciscoios xe View
9ciscoios xe View
10ciscoios xe View
11ciscoios xe View
12ciscoios xe View
13ciscoios xe View
14ciscoios xe View
15ciscoios xe View
16ciscoios xe View
17ciscoios xe View
18ciscoios xe View
19ciscoios xe View
20ciscoios xe View
21ciscoios xe View
22ciscoios xe View
23ciscoios xe View
24ciscoios xe View
25ciscoios xe View
26ciscoios xe View
27ciscoios xe View
28ciscoios xe View
29ciscoios xe View
30ciscoios xe View
31ciscoios xe View
32ciscoios xe View
33ciscoios xe View
34ciscoios xe View
35ciscoios xe View
36ciscoios xe View
37ciscoios xe View
38ciscoios xe View
39ciscoios xe View
40ciscoios xe View
41ciscoios xe View
42ciscoios xe View
43ciscoios xe View
44ciscoios xe View
45ciscoios xe View
46ciscoios xe View
47ciscoios xe View
48ciscoios xe View
49ciscoios xe View
50ciscoios xe View
51ciscoios xe View
52ciscoios xe View
53ciscoios xe View
54ciscoios xe View
55ciscoios xe View
56ciscoios xe View
57ciscoios xe View
58ciscoios xe View
59ciscoios xe View
60ciscoios xe View
61ciscoios xe View
62ciscoios xe View
63ciscoios xe View
64ciscoios xe View
65ciscoios xe View
66ciscoios xe View
67ciscoios xe View
68ciscoios xe View
69ciscoios xe View
70ciscoios xe View
71ciscoios xe View
72ciscoios xe View
73ciscoios xe View
74ciscoios xe View
75ciscoios xe View
76ciscoios xe View
77ciscoios xe View
78ciscoios xe View
79ciscoios xe View
80ciscoios xe View
81ciscoios xe View
82ciscoios xe View
83ciscoios xe View
84ciscoios xe View
85ciscoios xe View
86ciscoios xe View
87ciscoios xe View
88ciscoios xe View
89ciscoios xe View
90ciscoios xe View
91ciscoios xe View
92ciscoios xe View
93ciscoios xe View
94ciscoios xe View
95ciscoios xe View
96ciscoios xe View
97ciscoios xe View
98ciscoios xe View
99ciscoios xe View
100ciscoios xe View
101ciscoios xe View
102ciscoios xe View
103ciscoios xe View
104ciscocatalyst 9200 View
105ciscocatalyst 9200cx View
106ciscocatalyst 9200l View
107ciscocatalyst 9300 View
108ciscocatalyst 9300-24p-a View
109ciscocatalyst 9300-24p-e View
110ciscocatalyst 9300-24s-a View
111ciscocatalyst 9300-24s-e View
112ciscocatalyst 9300-24t-a View
113ciscocatalyst 9300-24t-e View
114ciscocatalyst 9300-24u-a View
115ciscocatalyst 9300-24u-e View
116ciscocatalyst 9300-24ux-a View
117ciscocatalyst 9300-24ux-e View
118ciscocatalyst 9300-48p-a View
119ciscocatalyst 9300-48p-e View
120ciscocatalyst 9300-48s-a View
121ciscocatalyst 9300-48s-e View
122ciscocatalyst 9300-48t-a View
123ciscocatalyst 9300-48t-e View
124ciscocatalyst 9300-48u-a View
125ciscocatalyst 9300-48u-e View
126ciscocatalyst 9300-48un-a View
127ciscocatalyst 9300-48un-e View
128ciscocatalyst 9300-48uxm-a View
129ciscocatalyst 9300-48uxm-e View
130ciscocatalyst 9300l View
131ciscocatalyst 9300l-24p-4g-a View
132ciscocatalyst 9300l-24p-4g-e View
133ciscocatalyst 9300l-24p-4x-a View
134ciscocatalyst 9300l-24p-4x-e View
135ciscocatalyst 9300l-24t-4g-a View
136ciscocatalyst 9300l-24t-4g-e View
137ciscocatalyst 9300l-24t-4x-a View
138ciscocatalyst 9300l-24t-4x-e View
139ciscocatalyst 9300l-48p-4g-a View
140ciscocatalyst 9300l-48p-4g-e View
141ciscocatalyst 9300l-48p-4x-a View
142ciscocatalyst 9300l-48p-4x-e View
143ciscocatalyst 9300l-48t-4g-a View
144ciscocatalyst 9300l-48t-4g-e View
145ciscocatalyst 9300l-48t-4x-a View
146ciscocatalyst 9300l-48t-4x-e View
147ciscocatalyst 9300l stack View
148ciscocatalyst 9300lm View
149ciscocatalyst 9300x View
150ciscocatalyst 9400 View
151ciscocatalyst 9400 supervisor engine-1 View
152ciscocatalyst 9407r View
153ciscocatalyst 9410r View
154ciscocatalyst 9500 View
155ciscocatalyst 9500h View
156ciscocatalyst 9600 View
157ciscocatalyst 9600 supervisor engine-1 View
158ciscocatalyst 9600x View
Total affected vendors: 1|Products: 158

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.4CVSS V31HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-20311 is associated with the following CWEs:

CWE-19: Common Weakness Enumeration Entry CWE-19

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-20311 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureBitişik ağ
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgyvendor-advisory

CVSS Vector Radar Chart

7.4 / 10
Attack VectorAdjacentComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack VectorAdjacent network
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

C
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cisco

Weakness Type (CWE & CAPEC)

CWE-19

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