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CVE-2021-1392

HIGHCVSS 7.8/10EPSS 0.22%

Last modified

CVE-2021-1392 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability in the CLI command permissions of Cisco IOS and Cisco IOS XE Software could allow an authenticated, local attacker to retrieve the password for Common Industrial Protocol (CIP) and then remotely configure the device as an administrative user. This vulnerability exists because incorrect permissions are associated with the show cip security CLI command. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A vulnerability in the CLI command permissions of Cisco IOS and Cisco IOS XE Software could allow an authenticated, local attacker to retrieve the password for Common Industrial Protocol (CIP) and then remotely configure the device as an administrative user. This vulnerability exists because incorrect permissions are associated with the show cip security CLI command. An attacker could exploit this vulnerability by issuing the command to retrieve the password for CIP on an affected device. A successful exploit could allow the attacker to reconfigure the device.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.22%

12.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos15.0\(1\)ey
CiscoIos15.0\(1\)ey1
CiscoIos15.0\(1\)ey2
CiscoIos15.1\(3\)svs
CiscoIos15.1\(3\)svt1
CiscoIos15.2\(1\)ey
CiscoIos15.2\(2\)e
CiscoIos15.2\(2\)e1
CiscoIos15.2\(2\)e2
CiscoIos15.2\(2\)e3
CiscoIos15.2\(2\)e4
CiscoIos15.2\(2\)e5
CiscoIos15.2\(2\)e5a
CiscoIos15.2\(2\)e5b
CiscoIos15.2\(2\)e6
CiscoIos15.2\(2\)e7
CiscoIos15.2\(2\)e7b
CiscoIos15.2\(2\)e8
CiscoIos15.2\(2\)e9
CiscoIos15.2\(2\)e10
CiscoIos15.2\(2\)ea
CiscoIos15.2\(2\)ea1
CiscoIos15.2\(2\)ea2
CiscoIos15.2\(2\)ea3
CiscoIos15.2\(2\)eb
CiscoIos15.2\(2\)eb1
CiscoIos15.2\(2\)eb2
CiscoIos15.2\(2a\)e2
CiscoIos15.2\(2b\)e
CiscoIos15.2\(3\)e1
CiscoIos15.2\(3\)e2
CiscoIos15.2\(3\)e3
CiscoIos15.2\(3\)e4
CiscoIos15.2\(3\)e5
CiscoIos15.2\(3\)ea
CiscoIos15.2\(4\)e5a
CiscoIos15.2\(4\)ea
CiscoIos15.2\(4\)ea1
CiscoIos15.2\(4\)ea2
CiscoIos15.2\(4\)ea3
CiscoIos15.2\(4\)ea4
CiscoIos15.2\(4\)ea5
CiscoIos15.2\(4\)ea6
CiscoIos15.2\(4\)ea7
CiscoIos15.2\(4\)ea8
CiscoIos15.2\(4\)ea9
CiscoIos15.2\(4\)ea9a
CiscoIos15.2\(4\)ea10
CiscoIos15.2\(4\)ec1
CiscoIos15.2\(4\)ec2

Showing 50 of 214 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1392?
A vulnerability in the CLI command permissions of Cisco IOS and Cisco IOS XE Software could allow an authenticated, local attacker to retrieve the password for Common Industrial Protocol (CIP) and then remotely configure the device as an administrative user. This vulnerability exists because incorrect permissions are associated with the show cip security CLI command. An attacker could exploit this vulnerability by issuing the command to retrieve the password for CIP on an affected device. A successful exploit could allow the attacker to reconfigure the device.
How severe is CVE-2021-1392?
CVE-2021-1392 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1392?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST