Ios XrOperating system · Cisco
CVE-2013-1162
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 · uneditedThe traffic engineering (TE) processing subsystem in Cisco IOS XR allows remote attackers to cause a denial of service (process restart) via crafted TE packets, aka Bug ID CSCue04000.
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 · moderate confidenceThe traffic engineering (TE) processing subsystem in Cisco IOS XR contains a vulnerability where remote attackers can send specially crafted TE packets to cause a denial of service via process restart. This affects the TE subsystem which handles network traffic engineering operations.
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 XrOperating system
all versionsCVSS 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
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 system running Cisco IOS XRRun 'show version' or 'uname -a' to confirm the OS is Cisco IOS XR. Look for 'IOS XR' in the output.Affected if The system is running any version of Cisco IOS XR and has TE subsystem enabled
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Check if Traffic Engineering is enabledRun 'show mpls traffic-eng status' or 'show traffic-eng summary' to see if TE is configured and active.Affected if TE subsystem is actively running or configured on the device
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Verify TE process is runningRun 'show process' | include 'te' or 'show processes mpls_te' to check if the TE process is alive.Affected if The TE process (e.g., mpls_te, MPLS-TE) is running on the device
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Check for TE interface configurationsRun 'show run interface' and look for 'mpls traffic-eng' or 'tunnel-te' configurations in the interface setup.Affected if Any interfaces are configured with MPLS Traffic Engineering or tunnel-te parameters
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Review access controls on TE trafficCheck ACLs or firewall rules that may limit which sources can send TE/IGP traffic to this device using 'show access-lists'.Affected if No ACLs or filters are in place to restrict TE traffic from untrusted sources
A Cisco IOS XR system with the TE subsystem enabled or configured is affected by this CVE, regardless of version.
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 dataApply the Cisco IOS XR security update or upgrade to a patched version. If immediate patching is not possible, consider network segmentation or ACLs to limit exposure to untrusted TE traffic sources.
Fix this in Ios Xr
Scoped from the published advisory
- Consultation4.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-1162 — 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-2013-1162 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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