CVEvulnerability

CVE-2017-6742

8.8 HIGH Known exploited Published 2017-07-17 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability — Cisco IOS and IOS XE Software

The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload.

Added to KEV
2023-04-19
Remediation due
2023-05-10
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp; https://nvd.nist.gov/vuln/detail/CVE-2017-6742
Status
Analyzed
Published
2017-07-17
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
8.8 HIGH — CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.0 HIGH — AV:N/AC:L/Au:S/C:C/I:C/A:C
Weaknesses
CWE-119

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.

Affected configurations

• cisco ios (>= 12.0 <= 12.4) • cisco ios (>= 15.0 <= 15.6) • cisco ios xe (>= 2.2.0 <= 3.17)

Related

Weakness · CWE (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

References