CVE-2016-6423
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote...
CVE-2016-6423 is a medium vulnerability (CVSS 6.5) in Cisco Ios, published October 5, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 69th percentile. No source names a fixed version.
- Severity
- 6.5 MediumCVSS 3.0, NVD
- Exploit chance
- 1.22%EPSS, 69th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
Affected products
What each source reports
NVD Score used
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.
- Record
CVE-2016-6423- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 6.3 Medium
AV:N/AC:M/Au:S/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE ListNo score
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.
- Record
CVE-2016-6423- Updated
- 2026-11-02
EUVDEUVD-2016-7346No score
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.
- Record
EUVD-2016-7346- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f765-58h8-hwq6
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote...
The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.
- Record
GHSA-f765-58h8-hwq6- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.