VulnerabilityModified

CVE-2018-0123

MEDIUM 5.5EPSS 0.41%

Does this matter?

Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.

Description

A Path Traversal vulnerability in the diagnostic shell for Cisco IOS and IOS XE Software could allow an authenticated, local attacker to use certain diagnostic shell commands that can overwrite system files. These system files may be sensitive and should not be able to be overwritten by a user of the diagnostic shell. The vulnerability is due to lack of proper input validation for certain diagnostic shell commands. An attacker could exploit this vulnerability by authenticating to the device, entering the diagnostic shell, and providing crafted user input to commands at the local diagnostic shell CLI. Successful exploitation could allow the attacker to overwrite system files that should be restricted. Cisco Bug IDs: CSCvg41950.

CVSS 3.0: 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.41% probability · 35th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-22
Affected: cisco/ios · cisco/ios xe
Source: psirt@cisco.com

EPSS trend

EPSS 0.4% 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/102967Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040346Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-iosVendor Advisory
http://www.securityfocus.com/bid/102967Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040346Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-iosVendor Advisory

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