CVE-2019-0703 Microsoft Windows: information leak
In plain words: The program reveals information it should keep private. Leaked secrets — tokens, passwords or memory contents — that help a bigger attack.
Confirmed exploited by CISA on · US federal patch deadline Jun 13, 2022
What to do
- Install Microsoft's security update for Windows. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic updates for the operating system and for Office, PDF and archive apps.
- Be careful with unexpected attachments — documents, .zip/.rar files and shortcuts are common bait.
- Use a normal (non-admin) account day to day and keep built-in protection like Microsoft Defender on.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Your files, saved passwords and accounts. Many of these let a program that is already running gain full administrator control.
The details
- Official name
- Microsoft Windows SMB Information Disclosure Vulnerability
- Product
- Microsoft Windows
- CISA description
- An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, which could lead to information disclosure from the server.
- Type of flaw
- Information leak
- Confirmed exploited
- May 23, 2022
- US federal patch deadline
- Jun 13, 2022
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Answering about CVE-2019-0703 ·
Questions about CVE-2019-0703
Is CVE-2019-0703 being exploited?
Yes. CISA added CVE-2019-0703 to its Known Exploited Vulnerabilities catalog on May 23, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2019-0703?
Install Microsoft's security update for Windows. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic updates for the operating system and for Office, PDF and archive apps.
Am I affected by CVE-2019-0703?
Only if you use Microsoft Windows. This one is aimed at devices or apps of the kind people own.