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CVE-2018-0472

35
FAUCET Score

CVE-2018-0472 is a high-severity vulnerability affecting Cisco IOS XE Software and ASA 5500-X Series Adaptive Security Appliances. It stems from improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An unauthenticated, remote attacker can exploit this flaw to trigger a device reload, leading to a denial of service. While no public exploit code or active exploitation is reported, the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
15.5\(3\)s5.36CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:15.5\(3\)s5.36:*:*:*:*:*:*:*
16.8.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*

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
16.22%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1622 is in the 95th percentile among its peer group of 51,506 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

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

ics-cert.us-cert.gov / advisories/ICSA-19-094-04
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipsec
Vendor Advisory
securityfocus.com / bid/105418
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041735
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041737
Third Party AdvisoryVDB Entry