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CVE-2018-0154

66
FAUCET Score

CVE-2018-0154 is a denial-of-service vulnerability in the crypto engine of Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software. An unauthenticated, remote attacker can exploit this by sending crafted VPN traffic, causing the device to hang or crash. With a CVSS score of 7.5 (High), it has a low attack complexity and requires no user interaction, leading to a complete loss of availability. This vulnerability is actively exploited and listed in CISA's KEV catalog, despite no public exploit code being readily available through Metasploit or ExploitDB. Community discussion is notably high, indicating significant interest.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
7.21%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 3, 2022
This CVE's current EPSS score of 0.0721 is in the 89th 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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dos
Vendor Advisory
securityfocus.com / bid/103559
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1040585
Broken LinkThird Party AdvisoryVDB Entry