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CVE-2019-1746

22
FAUCET Score

CVE-2019-1746 is a denial-of-service vulnerability affecting Cisco IOS and IOS XE Software, specifically within the Cluster Management Protocol (CMP) processing code. An unauthenticated, adjacent attacker can exploit insufficient input validation by sending malicious CMP management packets. This can cause the affected device to crash and automatically reload, leading to a denial of service. While rated Medium severity (CVSS 6.5) due to its adjacent attack vector, there is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.1\(6\)ea1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.1\(6\)ea1:*:*:*:*:*:*:*
12.1\(6\)ea1aCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.1\(6\)ea1a:*:*:*:*:*:*:*
12.1\(6\)ea2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.1\(6\)ea2:*:*:*:*:*:*:*
12.1\(6\)ea2aCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.1\(6\)ea2a:*:*:*:*:*:*:*
12.1\(6\)ea2bCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.1\(6\)ea2b:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.4HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
47.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 74th percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-cmp-dos
PatchVendor Advisory
securityfocus.com / bid/107612
Third Party AdvisoryVDB Entry