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PatchSiren cyber security CVE debrief

CVE-2017-12238 Cisco CVE debrief

CVE-2017-12238 is a Cisco Catalyst 6800 Series Switches vulnerability described by CISA as a VPLS denial-of-service issue. Because it is listed in CISA’s Known Exploited Vulnerabilities catalog, defenders should treat it as a priority remediation item for any affected Catalyst 6800 Series deployment. The official guidance in the supplied corpus is to apply updates per vendor instructions.

Vendor
Cisco
Product
Catalyst 6800 Series Switches
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Network and infrastructure teams operating Cisco Catalyst 6800 Series Switches, especially environments that use VPLS services or depend on edge/core switch availability.

Technical summary

The supplied official sources identify this issue as a VPLS denial-of-service vulnerability affecting Cisco Catalyst 6800 Series Switches. No further technical detail, impact mechanics, or CVSS score is included in the provided corpus. The key defensive takeaway is that Cisco’s affected platform is represented in CISA’s KEV catalog, indicating known exploitation risk and the need for vendor-directed updates.

Defensive priority

High. CISA lists this CVE in the Known Exploited Vulnerabilities catalog and sets a remediation due date of 2022-03-24 in the supplied metadata.

Recommended defensive actions

  • Confirm whether any Cisco Catalyst 6800 Series Switches are in service.
  • Identify any deployments using VPLS services on those switches.
  • Apply Cisco updates or other vendor-directed remediation as referenced by CISA.
  • Prioritize remediation before or as soon as possible after the KEV due date in the supplied timeline.
  • Validate that change windows and rollback plans are in place before updating production network devices.
  • Track the CVE in vulnerability management and asset inventories until remediation is complete.

Evidence notes

This debrief is based only on the supplied official sources: CISA KEV metadata, the CVE.org record, and the NVD detail page link. The CISA KEV record names the vulnerability as 'Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability,' marks it as known exploited, and includes the instruction 'Apply updates per vendor instructions.' The supplied timeline places the KEV catalog date at 2022-03-03 and the remediation due date at 2022-03-24. No CVSS score or deeper exploit details were provided in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2017-12238 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2017-12238

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2017-12238 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2017-12238

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.