CVE-2022-20678
Detail
Modified After Enrichment This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the attacker to cause the device to reload.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
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:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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:
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
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Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-755
Improper Handling of Exceptional Conditions
NIST
CWE-413
Improper Resource Locking
Cisco Systems, Inc.
Change History
19 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 12:24:50 AM
Action
Type
Old Value
New Value
Added
SSVC
{"timestamp":"2024-11-06T16:01:43.131476Z","id":"CVE-2022-20678","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
CVE Modified by Cisco Systems, Inc.
6/17/2026 12:24:50 AM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"Cisco","product":"Cisco IOS XE Software","versions":[{"version":"n/a","status":"affected"}]}]
CVE Modified by CVE
11/21/2024 1:43:18 AM
Action
Type
Old Value
New Value
Added
Reference
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4
CVE Modified by Cisco Systems, Inc.
5/14/2024 6:03:15 AM
Action
Type
Old Value
New Value
CVE Modified by Cisco Systems, Inc.
11/06/2023 10:42:36 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Removed
CVSS V3
Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1100-4g:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1100-4g_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1100-6g:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1100-6g_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST
5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1131:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1131_integrated_services_router:-:*:*:*:*:*:*:*
Initial Analysis by NIST
4/25/2022 11:28:22 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
CVSS V2
NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added
CWE
NIST CWE-755
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xe:16.9.6:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.12.5:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:17.3.3:*:*:*:*:*:*:*
OR
cpe:2.3:a:cisco:catalyst_8000v_edge:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-1n1s-4t2x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-1n1s-6t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-2n2s-4t2x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8300-2n2s-6t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8500-4qc:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_8500l:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-6g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1131:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
Changed
Reference Type
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4 No Types Assigned
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4 Vendor Advisory
Quick Info
CVE Dictionary Entry: CVE-2022-20678 NVD
Published Date: 04/15/2022 NVD
Last Modified: 06/17/2026
Source: Cisco Systems, Inc.
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