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TI-2021-17488 Aliases CVE-2021-40425GHSA-8p6g-qcgj-whg4

Out-of-bounds read in Webroot Secure Anywhere

Priority MEDIUM 62CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. A specially-crafted executable can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability. An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. An IOCTL_B03 request with specific invalid data causes a similar issue in the device driver WRCore_x64. An attacker can issue an ioctl to trigger this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WebrootSecure Anywhere21.4—No fix listedCNA
  • Secure Anywhere VendorWebroot Affected 21.4 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:webroot:secureanywhere:21.4:*:*:*:*:*:*:*21.4VulnerableWebroot
  • cpe:2.3:a:webroot:secureanywhere:21.4:*:*:*:*:*:*:* Versions 21.4 Vulnerable ·Webroot

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40425
  2. 2026-10-03 Alias added: GHSA-8p6g-qcgj-whg4

References

Exploit 1

  • TI-2021-17487 Out-of-bounds read in Webroot Secure Anywhere CVSS 3.1MEDIUM 6.5
  • TI-2023-14033 An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and… CVSS 3.1MEDIUM 5.5
  • TI-2018-12117 Webroot SecureAnywhere before 9.0.8.34 on macOS mishandles access to the driver by a process that lacks root privileges. CVSS 3.0HIGH 7.8
  • TI-2023-14032 An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and… CVSS 3.1MEDIUM 5.5
  • TI-2023-14031 An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences