CVE-2017-6739 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2022-03-03
A buffer overflow vulnerability in the SNMP subsystem of Cisco IOS and IOS XE software allows an authenticated, remote attacker to execute arbitrary code or cause a system reload. The attacker must send crafted SNMP packets using valid community strings or user credentials to the affected device.
Yes. CVE-2017-6739 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2017-6739?
Critical severity, with a CVSS score of 8.8, published 3 March 2022.
Which products and versions are affected?
Cisco IOS 12.0 through 12.4, 15.0 through 15.6; Cisco IOS XE 2.2 through 3.17.
Is there a fix for CVE-2017-6739?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2017-6739 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2017-6739?
Check whether you run Cisco IOS, Cisco IOS XE, Cisco IOS XE Software or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.