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PatchSiren cyber security CVE debrief

CVE-2016-20050 Foundstone CVE debrief

CVE-2016-20050 is a buffer overflow vulnerability in NetSchedScan 1.0. Local attackers can exploit this by providing an overly large input string in the Hostname/IP field, leading to a denial of service condition. The vulnerability has a CVSS score of 6.9 and is considered to be of medium severity. The CVE record was published on 2026-04-04T14:16:16.317Z and has not been modified since then. The NVD entry is currently Analyzed. Users of NetSchedScan 1.0 should be aware of this vulnerability and take steps to mitigate it.

Vendor
Foundstone
Product
NetSchedScan
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-04
Original CVE updated
2026-07-20
Advisory published
2026-04-04
Advisory updated
2026-07-20

Who should care

Users of NetSchedScan 1.0 should be aware of this vulnerability and take steps to mitigate it, as it can lead to a denial of service condition. The vulnerability has a CVSS score of 6.9 and is considered to be of medium severity. Operators of NetSchedScan 1.0 should review the CVE record and implement mitigations accordingly. Vulnerability management and security teams should also be aware of this vulnerability and track its status.

Technical summary

The vulnerability exists in the Hostname/IP field of NetSchedScan 1.0. An attacker can trigger a denial of service condition by providing a crafted payload of 388 bytes of data followed by 4 bytes of EIP overwrite. The vulnerability has a CVSS score of 6.9 and is considered to be of medium severity. The CVE record was published on 2026-04-04T14:16:16.317Z and has not been modified since then. The NVD entry is currently Analyzed.

Defensive priority

Medium priority should be given to patching or mitigating this vulnerability, as it can be exploited locally and has a CVSS score of 6.9.

Recommended defensive actions

  • Apply the vendor's patch or update to a fixed version of NetSchedScan.
  • Implement compensating controls, such as input validation and sanitization.
  • Monitor systems for suspicious activity and implement incident response plans.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-04-04T14:16:16.317Z and last modified on 2026-07-20T20:10:00.110Z. The NVD entry is currently Analyzed. The vulnerability was discovered in NetSchedScan 1.0 and has a CVSS score of 6.9. The CVE record was sourced from the NVD and has not been modified since its publication. The evidence for this CVE is based on the information provided by the NVD and other sources, but the exact details of the vulnerability are limited. Defenders should verify the affected scope and severity with the vendor and implement mitigations accordingly.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-04T14:16:16.317Z and has not been modified since then. The NVD entry is currently Analyzed.