NVD

CVE-2024-20433 Detail

Description

A vulnerability in the Resource Reservation Protocol (RSVP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a buffer overflow when processing crafted RSVP packets. An attacker could exploit this vulnerability by sending RSVP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rsvp-dos-OypvgVZf	Cisco Systems, Inc.	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	NIST
CWE-121	Stack-based Buffer Overflow	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 3:07:01 AM

Action

Type

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Affected

Record truncated, showing 2048 of 239131 characters.
View Entire Change Record

[{"vendor":"cisco","product":"ios_xe","defaultStatus":"unknown","cpes":["cpe:2.3:o:cisco:ios:12.0\\(24\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(26\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(27\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(28\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(29\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(30\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(31\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(31\\)s6:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s4:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(33\\)s:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s1:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(30\\)s2:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(24\\)s4a:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(28\\)s5:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(33\\)s5:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(27\\)s1:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(26\\)s4:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s15:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(33\\)s7:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s1d:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s2:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s9:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s1b:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(27\\)s5:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s11:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s8:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(31\\)s1:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(27\\)s4:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s3:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(28\\)s4:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(33\\)s6:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s4:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s2:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(28\\)s1:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(24\\)s6:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(32\\)s14:*:*:*:*:*:*:*","cpe:2.3:o:cisco:ios:12.0\\(25\\)s3:*:*:*:

Added

SSVC

{"timestamp":"2024-09-25T18:37:52.686012Z","id":"CVE-2024-20433","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Cisco Systems, Inc. 6/17/2026 3:07:01 AM

Action

Type

Old Value

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Added

Affected

Record truncated, showing 2048 of 109055 characters.
View Entire Change Record

[{"vendor":"Cisco","product":"IOS","versions":[{"version":"12.0(24)S","status":"affected"},{"version":"12.0(25)S","status":"affected"},{"version":"12.0(26)S","status":"affected"},{"version":"12.0(27)S","status":"affected"},{"version":"12.0(28)S","status":"affected"},{"version":"12.0(29)S","status":"affected"},{"version":"12.0(30)S","status":"affected"},{"version":"12.0(31)S","status":"affected"},{"version":"12.0(31)S6","status":"affected"},{"version":"12.0(32)S4","status":"affected"},{"version":"12.0(32)S","status":"affected"},{"version":"12.0(33)S","status":"affected"},{"version":"12.0(25)S1","status":"affected"},{"version":"12.0(30)S2","status":"affected"},{"version":"12.0(24)S4a","status":"affected"},{"version":"12.0(28)S5","status":"affected"},{"version":"12.0(33)S5","status":"affected"},{"version":"12.0(27)S1","status":"affected"},{"version":"12.0(26)S4","status":"affected"},{"version":"12.0(32)S15","status":"affected"},{"version":"12.0(33)S7","status":"affected"},{"version":"12.0(25)S1d","status":"affected"},{"version":"12.0(25)S2","status":"affected"},{"version":"12.0(32)S9","status":"affected"},{"version":"12.0(25)S1b","status":"affected"},{"version":"12.0(27)S5","status":"affected"},{"version":"12.0(32)S11","status":"affected"},{"version":"12.0(32)S8","status":"affected"},{"version":"12.0(31)S1","status":"affected"},{"version":"12.0(27)S4","status":"affected"},{"version":"12.0(32)S3","status":"affected"},{"version":"12.0(28)S4","status":"affected"},{"version":"12.0(33)S6","status":"affected"},{"version":"12.0(25)S4","status":"affected"},{"version":"12.0(32)S2","status":"affected"},{"version":"12.0(28)S1","status":"affected"},{"version":"12.0(24)S6","status":"affected"},{"version":"12.0(32)S14","status":"affected"},{"version":"12.0(25)S3","status":"affected"},{"version":"12.0(24)S2a","status":"affected"},{"version":"12.0(32)S10","status":"affected"},{"version":"12.0(31)S5","status":"affected"},{"version":"12.0(26)S2","status":"affected"},{"version":"12.0(32)S13","status":"affected"},{"version":"12.0(33)S9

Initial Analysis by NIST 10/03/2024 9:34:37 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE		NIST CWE-787
Added	CPE Configuration		Record truncated, showing 2048 of 108580 characters. View Entire Change Record OR cpe:2.3:o:cisco:ios:12.0\(24\)s::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s1::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s2::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s2a::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s2b::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s3::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s4::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s4a::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s5::::::: cpe:2.3:o:cisco:ios:12.0\(24\)s6::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s1::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s1a::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s1b::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s1c::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s1d::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s2::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s3::::::: cpe:2.3:o:cisco:ios:12.0\(25\)s4::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx1::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx2::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx3::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx4::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx5::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx6::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx6e::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx7::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx8::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx9::::::: cpe:2.3:o:cisco:ios:12.0\(25\)sx10::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s1::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s2::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s3::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s4::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s5::::::: cpe:2.3:o:cisco:ios:12.0\(26\)s6::::::: *cpe:2.3:
Added	CPE Configuration		Record truncated, showing 2048 of 20233 characters. View Entire Change Record OR cpe:2.3:o:cisco:ios_xe:3.3.0sg::::::: cpe:2.3:o:cisco:ios_xe:3.3.1sg::::::: cpe:2.3:o:cisco:ios_xe:3.3.2sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.0sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.1sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.2sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.3sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.4sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.5sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.6sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.7sg::::::: cpe:2.3:o:cisco:ios_xe:3.4.8sg::::::: cpe:2.3:o:cisco:ios_xe:3.5.0e::::::: cpe:2.3:o:cisco:ios_xe:3.5.1e::::::: cpe:2.3:o:cisco:ios_xe:3.5.2e::::::: cpe:2.3:o:cisco:ios_xe:3.5.3e::::::: 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::::::: cpe:2.3:o:cisco:ios_xe:3.6.5be::::::: cpe:2.3:o:cisco:ios_xe:3.6.5e::::::: cpe:2.3:o:cisco:ios_xe:3.6.6e::::::: cpe:2.3:o:cisco:ios_xe:3.6.7be::::::: cpe:2.3:o:cisco:ios_xe:3.6.7e::::::: cpe:2.3:o:cisco:ios_xe:3.6.8e::::::: cpe:2.3:o:cisco:ios_xe:3.6.9e::::::: cpe:2.3:o:cisco:ios_xe:3.6.10e::::::: cpe:2.3:o:cisco:ios_xe:3.7.0bs::::::: cpe:2.3:o:cisco:ios_xe:3.7.0e::::::: cpe:2.3:o:cisco:ios_xe:3.7.0s::::::: cpe:2.3:o:cisco:ios_xe:3.7.1as::::::: cpe:2.3:o:cisco:ios_xe:3.7.1e::::::: cpe:2.3:o:cisco:ios_xe:3.7.1s::::::: cpe:2.3:o:cisco:ios_xe:3.7.2e::::::: cpe:2.3:o:cisco:ios_xe:3.7.2s::::::: cpe:2.3:o:cisco:ios_xe:3.7.2ts::::::: *cpe:2.3:o:cisco:ios
Changed	Reference Type	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rsvp-dos-OypvgVZf No Types Assigned	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rsvp-dos-OypvgVZf Vendor Advisory

New CVE Received from Cisco Systems, Inc. 9/25/2024 1:15:15 PM

Action	Type	New Value
Added	Description	A vulnerability in the Resource Reservation Protocol (RSVP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a buffer overflow when processing crafted RSVP packets. An attacker could exploit this vulnerability by sending RSVP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Added	CVSS V3.1	Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added	CWE	Cisco Systems, Inc. CWE-121
Added	Reference	Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rsvp-dos-OypvgVZf [No types assigned]

Quick Info

CVE Dictionary Entry:
CVE-2024-20433
NVD Published Date:
09/25/2024
NVD Last Modified:
06/17/2026
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2024-20433 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CISA-ADP 6/17/2026 3:07:01 AM

CVE Modified by Cisco Systems, Inc. 6/17/2026 3:07:01 AM

Initial Analysis by NIST 10/03/2024 9:34:37 AM

New CVE Received from Cisco Systems, Inc. 9/25/2024 1:15:15 PM

Quick Info