CVE-2019-5786 Google Chrome Blink: memory-safety flaw
In plain words: The program mishandles the memory it uses to keep track of data. A specially made input can scramble that memory. Usually lets an attacker crash the program or run their own code with its permissions.
Confirmed exploited by CISA on · US federal patch deadline Jun 13, 2022
What to do
- Install Google's security update for Chrome Blink. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
- Keep extensions to a minimum and remove ones you do not recognise.
- Stop using Internet Explorer and any browser that no longer gets updates.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: A malicious or hacked website can be enough. Browser bugs are often the first step in a longer attack on the whole computer or phone.
The details
- Official name
- Google Chrome Blink Use-After-Free Vulnerability
- Product
- Google Chrome Blink
- CISA description
- Google Chrome Blink contains a heap use-after-free vulnerability that allows an attacker to potentially perform out of bounds memory access via a crafted HTML page.
- Type of flaw
- Memory-safety flaw (CWE-416)
- Confirmed exploited
- May 23, 2022
- US federal patch deadline
- Jun 13, 2022
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Answering about CVE-2019-5786 ·
Questions about CVE-2019-5786
Is CVE-2019-5786 being exploited?
Yes. CISA added CVE-2019-5786 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-2019-5786?
Install Google's security update for Chrome Blink. If no update exists, follow the vendor's workaround or stop using the product until one ships. Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
Am I affected by CVE-2019-5786?
Only if you use Google Chrome Blink. This one is aimed at devices or apps of the kind people own.