The Edge browser has a significant issue regarding password security, but Microsoft claims it is intentional.
A researcher has discovered that Microsoft Edge reveals all saved passwords in clear text memory during every session.
If you utilize Microsoft Edge to save your passwords, there is an important detail to consider. Each time you launch the browser, it decrypts all stored passwords and loads them into memory in clear text, where they remain for the duration of your session. This means that your passwords are left unprotected in your device’s memory, even if you don't visit any of the websites associated with them.
Security researcher Tom Rønning found this issue and reported it to Microsoft. However, the company stated that this behavior is intentional.
Microsoft Edge loads all saved passwords into memory in clear text, even when they are not in use. pic.twitter.com/ci0ZLEYFLB— Tom Jøran Sønstebyseter Rønning (@L1v1ng0ffTh3L4N) May 4, 2026
Edge is the sole Chromium-based browser that saves passwords in this way.
Microsoft Edge is built on Chromium, the same open-source foundation as Google Chrome. However, Chrome manages passwords quite differently, decrypting them only when needed, such as for autofill.
Additionally, Chrome employs a feature known as Application-Bound Encryption, which links decryption keys to an authenticated Chrome process, making it considerably more challenging for attackers to extract passwords from memory. Microsoft Edge does not have this feature.
Rønning examined several Chromium-based browsers and determined that Edge was the only one that loaded all saved passwords into memory at startup and left them exposed in clear text.
What is Microsoft’s response, and should there be concerns?
In a statement to CyberNews, Microsoft mentioned that this behavior is designed to facilitate quicker sign-ins, asserting that exploiting it would necessitate an attacker having administrative access to the device.
Security experts widely concur that having admin-level access essentially constitutes a full system compromise, regardless of the browser being used. Nevertheless, cybersecurity professionals caution that modern info-stealer malware specifically targets the gap between encrypted storage and runtime exposure, making the presence of clear text passwords in memory a genuine risk.
The consensus among security experts is clear: refrain from saving passwords in your browser and opt for a dedicated password manager instead.
Manisha Priyadarshini is a tech and entertainment writer with over nine years of editorial experience.
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The Edge browser has a significant issue regarding password security, but Microsoft claims it is intentional.
A security researcher discovered that Microsoft Edge loads all stored passwords into unencrypted memory upon startup, leaving them vulnerable for the duration of the session, even if they are not actively in use.
