CVE-2021-33500
High
Description
PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other platforms for similar reasons.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPutty
PublishedMay 21, 2021
First seenMay 21, 2021
How to fix
Update
- putty putty0.75 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| putty putty | v < 0.75 | 0.75 |
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