Unauthenticated remote code execution
Published Feb 25, 2021 · Updated Aug 3, 2024
Remote code execution in Microsoft Windows DNS Server allows remote attackers to execute code through crafted DNS traffic. Microsoft has not publicly disclosed the affected parser, record type, or memory-safety operation that mishandles the traffic. Exploitation requires the DNS Server role to be enabled; successful exploitation runs attacker-controlled code in the service context.
Summary
What happened
Remote code execution in Microsoft Windows DNS Server allows remote attackers to execute code through crafted DNS traffic. Microsoft has not publicly disclosed the affected parser, record type, or memory-safety operation that mishandles the traffic. Exploitation requires the DNS Server role to be enabled; successful exploitation runs attacker-controlled code in the service context.
The record
- CVE
- CVE-2021-24078
- Published
- Feb 25, 2021
- Updated
- Aug 3, 2024
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 25, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=10.0.0 <publication
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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