CVE-2017-6737

HIGH KEV

Cisco IOS - Authenticated Remote Code Execution via SNMP Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2017-6737 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added March 3, 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.

Scores

CVSS v3 8.8
EPSS 0.2036
EPSS Percentile 95.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-03-03
VulnCheck KEV 2022-03-03
InTheWild.io 2019-04-17
ENISA EUVD EUVD-2017-15791
CWE
CWE-119
Status published
Products (50)
cisco/ios 12.0 - 12.4
Cisco/IOS 12.0(7)XK
Cisco/IOS 12.0(7)XK1
Cisco/IOS 12.1(3)XI
Cisco/IOS 12.2(1)XD
Cisco/IOS 12.2(1)XD1
Cisco/IOS 12.2(1)XD2
Cisco/IOS 12.2(1)XD3
Cisco/IOS 12.2(1)XD4
Cisco/IOS 12.2(1)XS1a
... and 40 more
Published Jul 17, 2017
KEV Added Mar 03, 2022
Tracked Since Feb 18, 2026