Cisco IOS XE Software Command Injection Vulnerabilities

Published 8 y ago 2018-10-05 · modified 4 mo ago 2026-06-17 · JSON

CVSS

6.7

v3.1 · NVD

CISA KEV

not known exploited

EPSS

0.5%

percentile 42%

Public exploits

none known

A vulnerability in the CLI parser of Cisco IOS XE Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability exist because the affected software improperly sanitizes command arguments, failing to prevent access to certain internal data structures on an affected device. An attacker who has privileged EXEC mode (privilege level 15) access to an affected device could exploit these vulnerabilities on the device by executing CLI commands that contain custom arguments. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the affected device.

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 23 mo ago 2024-11-25

Exploit prediction (EPSS)

0.49% probability of exploitation in the next 30 days, higher than 42% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.1	6.7	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	7.2	`AV:L/AC:L/Au:N/C:C/I:C/A:C`

Affected products

Cisco Cisco IOS XE Software

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command
CWE-78 Improper Neutralization of Special Elements used in an OS Command

Technology feeds

Cisco IOS (RSS, critical only)

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-iosxe-cmdinj · vendor-advisory, x_refsource_CISCO, x_transferred
securitytracker.com /id/1041737 · vdb-entry, x_refsource_SECTRACK, x_transferred

Sources

CVE List: CVE-2018-0477
NVD: CVE-2018-0477

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary