Ios XeOperating system · Cisco
CVE-2015-6282
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCisco IOS XE 2.x and 3.x before 3.10.6S, 3.11.xS through 3.13.xS before 3.13.3S, and 3.14.xS through 3.15.xS before 3.15.1S allows remote attackers to cause a denial of service (device reload) via IPv4 packets that require NAT and MPLS actions, aka Bug ID CSCut96933.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA denial of service vulnerability in Cisco IOS XE allows remote unauthenticated attackers to cause device reload by sending specially crafted IPv4 packets that trigger simultaneous NAT and MPLS processing. The flaw is in the handling of packets requiring both NAT and MPLS actions, causing a crash.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Ios XeOperating system
= 2.1.0= 2.1.1= 2.1.2= 2.1.3= 2.2.1= 2.2.2= 2.2.3= 2.3.0= 2.3.0t= 2.3.1t= 2.3.2= 2.4.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:N/C:N/I:N/A:C
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the Cisco IOS XE versionExecute 'show version' or 'show version | include IOS XE' on the device CLI to obtain the exact software version stringAffected if The version matches any of the following: 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.2.1, 2.2.2, 2.2.3, 2.3.0, 2.3.0t, 2.3.1t, 2.3.2, or 2.4.0
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Verify if NAT is enabledExecute 'show running-config | include ip nat' or 'show ip nat statistics' to check for active NAT configurationAffected if NAT is configured and active on the device (any NAT pool, inside/outside interface, or translation entries exist)
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Verify if MPLS is enabledExecute 'show running-config | include mpls' or 'show mpls interface' to check for MPLS configurationAffected if MPLS is enabled on any interface (mpls ip command or tag-switching configured)
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Confirm NAT and MPLS can interactExamine the device configuration to determine if NAT is applied to interfaces that process MPLS-tagged traffic, or if the device routes between NAT'd networks and MPLS-enabled interfacesAffected if Both NAT and MPLS are enabled and the device processes traffic that could traverse both features simultaneously
The device is affected if it runs any of the listed IOS XE versions and has both NAT and MPLS features enabled with potential for traffic to require simultaneous NAT and MPLS processing.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Cisco IOS XE to version 3.10.6S or later for 2.x/3.x branches, 3.13.3S or later for 3.11-3.13 branches, or 3.15.1S or later for 3.14-3.15 branches. If immediate upgrade is not possible, consider filtering or rate-limiting unusual NAT+MPLS traffic patterns at upstream devices.
Fix this in Ios Xe
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-6282 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2015-6282 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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