CVE-2021-28496
5.7 · MEDIUMOverview
CVE-2021-28496 is a medium-severity vulnerability affecting arista eos. It was published on October 21, 2021 and has a CVSS 3.1 base score of 5.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
On systems running Arista EOS and CloudEOS with the affected release version, when using shared secret profiles the password configured for use by BiDirectional Forwarding Detection (BFD) will be leaked when displaying output over eAPI or other JSON outputs to other authenticated users on the device. The affected EOS Versions are: all releases in 4.22.x train, 4.23.9 and below releases in the 4.23.x train, 4.24.7 and below releases in the 4.24.x train, 4.25.4 and below releases in the 4.25.x train, 4.26.1 and below releases in the 4.26.x train
Remediation
Check the references section for vendor advisories and patches from arista. Update eos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| arista | eos | 4.22 | Affected |
Frequently Asked Questions
What is CVE-2021-28496?
CVE-2021-28496 is a medium-severity vulnerability affecting arista eos. It was published on October 21, 2021 and has a CVSS 3.1 base score of 5.7 (MEDIUM).
How severe is CVE-2021-28496?
This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-28496?
Check the references section for vendor advisories and patches from arista. Update eos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-28496?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-28496 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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