CVE-2017-6740 is a critical buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software, affecting all SNMP versions. An authenticated, remote attacker can exploit this by sending a crafted SNMP packet, potentially leading to arbitrary code execution and full system control or a system reload. With a CVSS score of 8.8 (High), this vulnerability requires low attack complexity and authenticated access (knowing the community string for SNMP v1/v2c or user credentials for SNMP v3). This CVE is actively exploited in the wild, as indicated by its presence in the KEV catalog, despite a lack of public exploit code or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 12.0, <= 12.4CPE matchmatch criteria | cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* | ||
>= 15.0, <= 15.6CPE matchmatch criteria | cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* | ||
>= 2.2.0, <= 3.17CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.