# CVE-2017-6742

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.

- Page: https://www.vulneraibility.com/cve/CVE-2017-6742
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2023-04-19; CISA due date 2023-05-10
- EPSS: 21.26% (percentile 97.6)
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2026-01-17)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2024-11-08)
- Weakness: CWE-119
- Published: 2017-07-17

## Affected versions

- Cisco Cisco IOS XE Software: affected 3.7.0S; 3.7.1S; 3.7.2S; 3.7.3S; 3.7.4S; 3.7.5S; 3.7.6S; 3.7.7S; 3.7.4aS; 3.7.2tS; 3.7.0bS; 3.8.0S; 3.8.1S; 3.8.2S; 3.9.1S; 3.9.0S; 3.9.2S; 3.9.0aS; 3.11.1S; 3.11.2S; 3.11.0S; 3.11.3S; 3.11.4S; 3.12.0S; 3.12.1S; 3.12.2S; 3.12.3S; 3.12.0aS; 3.12.4S; 3.13.0S; 3.13.1S; 3.13.2S; 3.13.3S; 3.13.4S; 3.13.5S; 3.13.2aS; 3.13.0aS; 3.13.5aS; 3.13.6S; 3.13.7S; 3.13.6aS; 3.13.7aS; 3.6.3E; 3.6.6E; 3.6.5bE; 3.14.0S; 3.14.1S; 3.14.2S; 3.14.3S; 3.14.4S; 3.15.0S; 3.15.1S; 3.15.2S; 3.15.1cS; 3.15.3S; 3.15.4S; 3.7.4E; 3.7.5E; 3.16.0S; 3.16.1S; 3.16.1aS; 3.16.2S; 3.16.0cS; 3.16.3S; 3.16.2bS; 3.16.4aS; 3.16.4bS; 3.16.5S; 3.16.4dS; 3.17.0S; 3.17.1S; 3.17.2S; 3.17.1aS; 3.17.3S; 16.2.1; 16.2.2; 16.3.1; 16.3.2; 16.3.3; 16.3.1a; 16.3.4; 16.4.1; 16.4.2; 16.5.1; 16.5.1b; 3.18.0aS; 3.18.0S; 3.18.1S; 3.18.0SP; 3.18.1SP; 3.18.1aSP; 3.18.2aSP

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
- [other] http://www.securityfocus.com/bid/99345
- [other] http://www.securitytracker.com/id/1038808
- [other] https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6742

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.