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CVE-2016-6392

25
FAUCET Score

CVE-2016-6392 is a denial-of-service vulnerability affecting Cisco IOS 12.2, 15.0-15.3, and IOS XE 3.1-3.9. A remote unauthenticated attacker can trigger a device restart by sending a crafted IPv4 Multicast Source Discovery Protocol (MSDP) Source-Active (SA) message. Rated High (CVSS 7.5), this vulnerability requires no user interaction and has a significant impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.2\(33\)cxCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(33\)cx:*:*:*:*:*:*:*
12.2\(33\)cyCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(33\)cy:*:*:*:*:*:*:*
12.2\(33\)cy1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(33\)cy1:*:*:*:*:*:*:*
12.2\(33\)iraCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(33\)ira:*:*:*:*:*:*:*
12.2\(33\)irbCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.2\(33\)irb:*:*:*:*:*:*:*

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
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0259 is in the 71st percentile among its peer group of 51,485 CVEs.

Social Chatter

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-20160928-msdp
Vendor Advisory
securityfocus.com / bid/93211
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036914
Third Party AdvisoryVDB Entry