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CVE-2021-1540

HIGHCVSS 7.2/10EPSS 1.05%

Last modified

CVE-2021-1540 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Metrics

CVSS 3.1
7.2/10

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

EPSS Probability
1.05%

60.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoStaros< 21.16.9
CiscoStaros>= 21.17.0, < 21.17.10
CiscoStaros>= 21.18.0, < 21.18.16
CiscoStaros>= 21.19.0, < 21.19.11
CiscoStaros>= 21.19.n, < 21.19.n7
CiscoStaros>= 21.20.0, < 21.20.8
CiscoVirtualized Packet CoreAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1540?
Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
How severe is CVE-2021-1540?
CVE-2021-1540 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1540?
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.

Are you affected by CVE-2021-1540?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST