CVE-2014-3309

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-07-09 · updated 2026-06-17
Weakness: CWE-264

Description

The NTP implementation in Cisco IOS and IOS XE does not properly support use of the access-group command for a "deny all" configuration, which allows remote attackers to bypass intended restrictions on time synchronization via a standard query, aka Bug ID CSCuj66318.

Affected products

Cisco IOS: all versions
Cisco IOS XE: all versions

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3309
http://www.securityfocus.com/bid/68463
http://www.securitytracker.com/id/1030549
https://exchange.xforce.ibmcloud.com/vulnerabilities/94420
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3309
http://www.securityfocus.com/bid/68463
http://www.securitytracker.com/id/1030549
https://exchange.xforce.ibmcloud.com/vulnerabilities/94420

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