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PatchSiren cyber security CVE debrief

CVE-2017-6742 Cisco CVE debrief

CVE-2017-6742 is identified in the supplied official records as a Cisco IOS and IOS XE Software SNMP remote code execution vulnerability. CISA added it to the Known Exploited Vulnerabilities catalog on 2023-04-19 and set a remediation due date of 2023-05-10, which makes it a priority for defenders managing Cisco network infrastructure. The supplied corpus does not include affected-version details or exploit mechanics, so the practical response is to treat it as an urgent patch-and-verify item and follow Cisco’s update guidance.

Vendor
Cisco
Product
IOS and IOS XE Software
CVSS
HIGH 8.8
CISA KEV
Listed
Original CVE published
2023-04-19
Original CVE updated
2023-04-19
Advisory published
2023-04-19
Advisory updated
2023-04-19

Who should care

Network and security teams responsible for Cisco IOS and IOS XE devices, especially environments that rely on SNMP for management or operate critical routing/switching infrastructure.

Technical summary

The official materials provided here identify CVE-2017-6742 as a Cisco IOS and IOS XE SNMP remote code execution issue. CISA’s KEV entry confirms known exploitation and directs organizations to apply updates per vendor instructions. No affected-version list, attack preconditions, or CVSS score were supplied in the corpus, so this debrief stays limited to the official catalog and advisory metadata.

Defensive priority

Urgent. This is a CISA KEV-listed vulnerability affecting network infrastructure, so it should be prioritized for patching and validation ahead of lower-risk work.

Recommended defensive actions

  • Inventory Cisco IOS and IOS XE devices in scope and determine whether they are exposed to SNMP or otherwise reachable on management paths.
  • Review Cisco’s advisory and apply vendor-recommended updates as soon as feasible.
  • Confirm remediation status across all affected devices, including any appliances or network gear managed by third parties.
  • Limit unnecessary SNMP exposure and monitor management-plane access until remediation is complete.
  • Track the CISA KEV due date (2023-05-10) as a hard deadline for remediation planning and exception handling.

Evidence notes

The supplied source corpus establishes: Cisco as the vendor; IOS and IOS XE Software as the product; SNMP remote code execution as the vulnerability type; CISA KEV inclusion; dateAdded 2023-04-19; dueDate 2023-05-10; and requiredAction 'Apply updates per vendor instructions.' The corpus does not provide affected versions, CVSS scoring, or exploitation details, so no such claims are made here.

Sources and references

Verified primary and authoritative sources

  • CVE-2017-6742 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2017-6742

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

  • CVE-2017-6742 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2017-6742

    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.