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CVE-2017-6678

19
FAUCET Score

CVE-2017-6678 is a denial-of-service vulnerability in Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software versions 19.2 through 21.0. An unauthenticated, remote attacker can exploit insufficient handling of user-supplied data by sending crafted UDP packets to cause both control function instances to reload, leading to a complete system reload and disconnection of all subscribers. This vulnerability has a CVSSv3 score of 7.5 (HIGH), indicating a network-based attack with low complexity and high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
v19.2_baseCPE matchmatch criteria
cpe:2.3:a:cisco:virtualized_packet_core:v19.2_base:*:*:*:*:*:*:*
v19.3_baseCPE matchmatch criteria
cpe:2.3:a:cisco:virtualized_packet_core:v19.3_base:*:*:*:*:*:*:*
v20.0_baseCPE matchmatch criteria
cpe:2.3:a:cisco:virtualized_packet_core:v20.0_base:*:*:*:*:*:*:*
v20.1_baseCPE matchmatch criteria
cpe:2.3:a:cisco:virtualized_packet_core:v20.1_base:*:*:*:*:*:*:*
v20.2_baseCPE matchmatch criteria
cpe:2.3:a:cisco:virtualized_packet_core:v20.2_base:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.74%
Probability of exploitation in next 30 days
EPSS Percentile
75.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0174 is in the 58th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media 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.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-vpc
Vendor Advisory
securityfocus.com / bid/99195
Third Party AdvisoryVDB Entry