CVE-2016-6422

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Summary

CVECVE-2016-6422
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-10-06 10:59:09 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionCisco IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that should have been recognized by a filter, aka Bug ID CSCuy64806.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.002100000 probability, percentile 0.432050000 (date 2026-05-07)

Problem Types: CWE-20 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Ios 12.2\(33\)sxj9 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Cisco IOS Software for Cisco Catalyst 6500 Series Switches and 7600 Series Routers ACL Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Mitigation, Vendor Advisory
Cisco IOS Lets Remote Users Bypass Port Access Controls on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Cisco Catalyst 6500 Series Switches and 7600 Series Routers Information Disclosure Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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