Known exploited vulnerability
CVE-2021-21551
The short answer
CVE-2021-21551 affects Dell dbutil and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-03-31: attackers are using it, so patch it first.
What it is
Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial of service, or information disclosure. Local authenticated user access is required.
Weakness: CWE-782.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Mar 31, 2022
Federal due date Apr 21, 2022
EPSS, next 30 days
80%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
dbutil. NVD's record lists the exact affected versions.
References
- www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerability MitigationVendor Advisory
- www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerability MitigationVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21551 US Government Resource
Questions
Is CVE-2021-21551 being exploited?
Yes. CISA added CVE-2021-21551 to its Known Exploited Vulnerabilities catalog on 2022-03-31, with a federal remediation due date of 2022-04-21.
How do I fix CVE-2021-21551?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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