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Ios XeOperating system · Cisco

CVE-2014-3269

MEDIUM · 6.8 CVSS v2.0 Published 2014-05-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
74/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
The SNMP module in Cisco IOS XE 3.5E allows remote authenticated users to cause a denial of service (device reload) by polling frequently, aka Bug ID CSCug65204.

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 confidence

The SNMP module in Cisco IOS XE 3.5E contains a vulnerability where remote authenticated users can trigger a denial of service condition by polling the SNMP service frequently, causing the device to reload. This indicates a resource exhaustion or memory handling flaw in the SNMP polling code path.

MitigationApply the relevant Cisco IOS XE security update for CSCug65204. Additionally, restrict SNMP access to trusted management networks/IPs and implement rate limiting on SNMP queries to reduce exposure.

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
Affected:= 3.5e

CVSS 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
Single
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:S/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device OS and version
    Execute 'show version' or 'show running-config | include version' to retrieve the Cisco IOS XE version. Look for version string '3.5E' specifically.
    Affected if The version shown is exactly 3.5E (not a later version)
  2. Confirm SNMP is enabled on the device
    Execute 'show snmp' or check the configuration with 'show running-config | include snmp' to see if SNMP is configured.
    Affected if SNMP is enabled and configured (community strings, SNMP server settings present)
  3. Check SNMP community string configuration
    Execute 'show snmp community' or review the configuration for SNMP community strings (read-only and read-write).
    Affected if SNMP community strings are configured, allowing authenticated access
  4. Verify SNMP network access configuration
    Execute 'show snmp group' and 'show snmp host' or review the configuration for SNMP access controls and permitted management hosts.
    Affected if SNMP is accessible from remote networks (not restricted to localhost/127.0.0.1 only)

The device is affected if it runs Cisco IOS XE version 3.5E exactly AND has SNMP enabled with remote authenticated access, making it vulnerable to resource exhaustion from frequent SNMP polling.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the relevant Cisco IOS XE security update for CSCug65204. Additionally, restrict SNMP access to trusted management networks/IPs and implement rate limiting on SNMP queries to reduce exposure.

Fix this in Ios Xe Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2014-3269 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data