CVE-2014-3309
The NTP implementation in Cisco IOS and IOS XE does not properly support use of the access-group...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2014-3309- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2014-3309- Updated
- 2026-11-02
EUVDEUVD-2014-3322 No score
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.
- Record
EUVD-2014-3322- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xrcg-wf6c-6jc9 No score
The NTP implementation in Cisco IOS and IOS XE does not properly support use of the access-group...
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.
- Record
GHSA-xrcg-wf6c-6jc9- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2014-3309 is a medium vulnerability (CVSS 5.0) in Cisco Ios, published July 9, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.11%, the 81st percentile. No source names a fixed version.