VulnerabilityModified

CVE-2018-0473

HIGH 8.6EPSS 3.52%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the Precision Time Protocol (PTP) subsystem of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Precision Time Protocol. The vulnerability is due to insufficient processing of PTP packets. An attacker could exploit this vulnerability by sending a custom PTP packet to, or through, an affected device. A successful exploit could allow the attacker to cause a DoS condition for the PTP subsystem, resulting in time synchronization issues across the network.

CVSS 3.0: 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS: 3.52% probability · 89th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-399
Affected: cisco/ios
Source: psirt@cisco.com

EPSS trend

EPSS 3.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securityfocus.com/bid/105427Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ptpVendor Advisory
http://www.securityfocus.com/bid/105427Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ptpVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.