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CVE-2024-20276

HIGH
7.4
CVSS Score
Published: March 27, 2024 at 04:51 PM UTC
Updated: June 17, 2026 at 07:06 AM UTC
10 products affected across 1 vendorIOSCatalyst 6504-eCatalyst 6506-e

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Severity
HIGH7.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A vulnerability in Cisco IOS Software for Cisco Catalyst 6000 Series Switches could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of process-switched traffic. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS· Cisconpm
95%
15.5(1)SY1015.5(1)SY1115.5(1)SY515.5(1)SY615.5(1)SY715.5(1)SY815.5(1)SY915.5(1)sy1015.5(1)sy1115.5(1)sy515.5(1)sy615.5(1)sy715.5(1)sy815.5(1)sy9
cisco-catalyst-6503-e (environment) · cisco-catalyst-6504-e (environment) · cisco-catalyst-6506-e (environment) · cisco-catalyst-6509-e (environment) · cisco-catalyst-6509-v-e (environment) · cisco-catalyst-6513-e (environment) · cisco-catalyst-6807-xl (environment) · cisco-catalyst-c6800-sup6t (environment) · cisco-catalyst-c6800-sup6t-xl (environment)
Catalyst 6503-e· Ciscodevice
80%
All versions
Catalyst 6504-e· Ciscodevice
80%
All versions
Catalyst 6506-e· Ciscodevice
80%
All versions
Catalyst 6509-e· Ciscodevice
80%
All versions
Catalyst 6509-v E· Ciscodevice
80%
All versions
Catalyst 6513-e· Ciscodevice
80%
All versions
Catalyst 6807-Xl· Ciscodevice
80%
All versions
Catalyst C6800-Sup6T· Ciscodevice
80%
All versions
Catalyst C6800-Sup6T-Xl· Ciscodevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-dos-Hq4d3tZG

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHcisco
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-248

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