Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2017-6739

CVE-2017-6739HIGH

IntelliShield Universal Product — Cisco IOS and IOS XE Software

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .1085   95.7   YES

AFFECTED
  Product            Versions  Fixed
  Universal Product  N/A –     —

TIMELINE
  Mar 9   Reserved by cisco
  Jul 17  Published (CNA: cisco)
  Mar 3   Added to CISA KEV, remediation due 2022-03-24

CWE-119 · CNA: cisco · CVSS v3.0 · 5 references · KEV due March 24, 2022

Description

A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.  The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system. Only traffic directed to the affected system can be used to exploit this vulnerability.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 9, 2017	Reserved	Reserved by cisco
July 17, 2017	Published	Published (CNA: cisco)
March 3, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-03-24

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
IntelliShield	Universal Product	—	N/A	—

Weaknesses

CWE-119

References (5)

http://www.securityfocus.com/bid/99345 [vdb-entry, x_refsource_BID, x_transferred]
http://www.securitytracker.com/id/1038808 [vdb-entry, x_refsource_SECTRACK, x_transferred]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp [x_refsource_CONFIRM, x_transferred]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6739 [government-resource]

Authoritative record: CVE-2017-6739 at cve.org

Vendors: intellishield

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2017-6739 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.