CVE-2021-40424
CVE-2021-40424 is a medium-severity vulnerability in Webroot Secureanywhere with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.9
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Webroot Secureanywhere
- Published:
- Last modified:
Description
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. The GetProcessCommandLine IOCTL request could cause an out-of-bounds read in the device driver WRCore_x64. An attacker can issue an ioctl to trigger this vulnerability.
Frequently asked questions
- What is CVE-2021-40424?
- 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. The GetProcessCommandLine IOCTL request could cause an out-of-bounds read in the device driver WRCore_x64. An attacker can issue an ioctl to trigger this vulnerability.
- How severe is CVE-2021-40424?
- CVE-2021-40424 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-40424 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-40424?
- CVE-2021-40424 affects Webroot Secureanywhere. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-40424?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-40424 published?
- CVE-2021-40424 was published on 2022-04-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:webroot:secureanywhere:21.4:*:*:*:*:*:*:*
More vulnerabilities in Webroot Secureanywhere
- CVE-2018-16962 — High (CVSS 7.8): Webroot SecureAnywhere before 9.0.8.34 on macOS mishandles access to the driver by a process that lacks root privileges.
- CVE-2021-40425 — Medium (CVSS 6.5): An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. A…
- CVE-2023-29820 — Medium (CVSS 5.5): An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and before allows a local attacker to…
- CVE-2023-29819 — Medium (CVSS 5.5): An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and before allows a local attacker to…
- CVE-2023-29818 — Medium (CVSS 5.5): An issue found in Webroot SecureAnywhere Endpoint Protection CE 23.1 v.9.0.33.39 and before allows a local attacker to…
All CVEs affecting Webroot Secureanywhere →
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