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CVE-2017-6737

84
FAUCET Score

CVE-2017-6737 is a critical buffer overflow vulnerability in the SNMP implementation of Cisco IOS and IOS XE, allowing authenticated remote attackers to execute arbitrary code or cause a system reload. With a CVSS score of 8.8 (HIGH), it requires an attacker to send a crafted SNMP packet and know either the SNMP community string or user credentials. This vulnerability has been actively exploited (KEV) and has a high FAUCET Risk Score of 99/100, despite no public Metasploit or ExploitDB modules. It has garnered significant community discussion and media coverage, indicating its importance.

Impacted Technologies

VendorProductVersion(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, <= 3.17.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
42.63%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 3, 2022
This CVE's current EPSS score of 0.4263 is in the 98th percentile among its peer group of 17,822 CVEs.

Social Chatter

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.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
Vendor Advisory
securityfocus.com / bid/99345
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1038808
Broken LinkThird Party AdvisoryVDB Entry
sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
Vendor Advisory