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PatchSiren cyber security CVE debrief

CVE-2017-6743 Cisco CVE debrief

CVE-2017-6743 is a Cisco IOS and IOS XE Software SNMP remote code execution vulnerability that CISA added to its Known Exploited Vulnerabilities catalog. Because it is a known exploited issue affecting network infrastructure software, it should be treated as a high-priority remediation item. Cisco and CISA guidance in the supplied sources points to applying vendor updates per instructions.

Vendor
Cisco
Product
IOS and IOS XE Software
CVSS
HIGH 8.8
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 operations, infrastructure, and security teams responsible for Cisco IOS and IOS XE deployments should prioritize this issue, especially where management-plane exposure or operational criticality makes rapid remediation important.

Technical summary

The supplied sources identify CVE-2017-6743 as a Cisco IOS and IOS XE Software SNMP remote code execution vulnerability. CISA lists it in the Known Exploited Vulnerabilities catalog and directs organizations to apply updates per vendor instructions. The provided corpus does not include deeper root-cause, affected-version, or exploitation-path details, so remediation guidance should come from Cisco’s official advisories and update instructions referenced by the official CVE and NVD records.

Defensive priority

High. CISA has listed this CVE in the KEV catalog, indicating known exploitation and a need for timely remediation.

Recommended defensive actions

  • Inventory Cisco IOS and IOS XE devices that may be affected.
  • Review Cisco’s official remediation guidance for CVE-2017-6743.
  • Apply vendor-provided updates as soon as feasible.
  • If immediate updating is not possible, follow Cisco’s mitigation or compensating-control instructions from official advisories.
  • Prioritize remediation for critical or externally reachable network devices.
  • Verify completion against the CISA KEV due date and internal patch deadlines.

Evidence notes

The evidence corpus includes the CISA Known Exploited Vulnerabilities entry for CVE-2017-6743, which names the issue as a Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability and specifies the required action: apply updates per vendor instructions. The official CVE and NVD links are provided as corroborating references, but the supplied corpus does not include additional technical detail beyond the vulnerability name and KEV status.

Sources and references

Verified primary and authoritative sources

  • CVE-2017-6743 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2017-6743

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

  • CVE-2017-6743 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2017-6743

    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.