CVE-2021-1509
7.5 · HIGHOverview
CVE-2021-1509 is a high-severity vulnerability affecting cisco vedge_100_firmware. It was published on May 6, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Multiple vulnerabilities in Cisco SD-WAN vEdge Software could allow an attacker to execute arbitrary code as the root user or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Remediation
Check the references section for vendor advisories and patches from cisco. Update vedge_100_firmware 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 |
|---|---|---|---|
| cisco | vedge_100_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_1000_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_100b_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_100m_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_100wm_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_2000_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_5000_firmware | >= 20.4, < 20.4.1 | Affected |
| cisco | vedge_cloud_firmware | >= 20.4, < 20.4.1 | Affected |
Frequently Asked Questions
What is CVE-2021-1509?
CVE-2021-1509 is a high-severity vulnerability affecting cisco vedge_100_firmware. It was published on May 6, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-1509?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-1509?
Check the references section for vendor advisories and patches from cisco. Update vedge_100_firmware 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-2021-1509?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1509 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.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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