CVE-2017-6742A 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.
Updated under an hour ago ()
Does this affect you?
It affects Cisco IOS XE Software and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Apr 19, 2023; federal agencies had to remediate by May 10, 2023. Treat that date as your deadline.
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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.
- CVSS
- 8.8 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119
- Known exploited
- Added to CISA KEV Apr 19, 2023; federal remediation due May 10, 2023Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 21.42% (percentile 98)
- Assigned by
- cisco
- NVD analysis
- Analyzed
- Record last updated
- Jan 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Cisco Cisco IOS XE Software cisco:ios_xe_software (from the name) | 3.7.0S; 3.7.1S; 3.7.2S; 3.7.3S; 3.7.4S; 3.7.5S; 3.7.6S; 3.7.7S; and 84 more ranges | CNA record |
IntelliShield Universal Product intellishield:universal_product (from the name) | all versions | CNA record |
cisco ios cisco:ios | from 12.0 through 12.4; from 15.0 through 15.6 | NVD |
cisco ios_xe cisco:ios_xe | from 2.2.0 through 3.17 | NVD |
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmpvendor-advisory
- http://www.securityfocus.com/bid/99345broken-link, third-party-advisory, vdb-entry
- http://www.securitytracker.com/id/1038808broken-link, third-party-advisory, vdb-entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmpvendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6742us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.