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CVE-2016-6368

22
FAUCET Score

CVE-2016-6368 is a denial-of-service vulnerability in Cisco Firepower System Software, affecting various Cisco security products, including ASA FirePOWER Services and Firepower appliances. It stems from improper input validation of Pragmatic General Multicast (PGM) protocol packets, allowing an unauthenticated, remote attacker to crash the Snort process. With a CVSS score of 8.6 (HIGH), this vulnerability has a low attack complexity and can lead to a complete denial of service by bypassing traffic inspection or dropping traffic. While there is no known public exploit code or active exploitation, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0:*:*:*:*:*:*:*
6.0.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0.0:*:*:*:*:*:*:*
6.0.0.1CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.0.0.1:*:*:*:*:*:*:*
6.0.1CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.01%
Probability of exploitation in next 30 days
EPSS Percentile
86.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0301 is in the 75th 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

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-20170419-fpsnort
Vendor Advisory
securityfocus.com / bid/97932
Third Party AdvisoryVDB Entry
securityfocus.com / bid/98292