CVE-2026-109390
Critical
Description
AnyDesk before 8.0.3 allows unauthenticated remote attackers to execute arbitrary code via a heap-based buffer overflow, as demonstrated on Linux for command execution as root without the victim approving desktop control. In the stream packet handler for mode 5 in the session protocol, a payload length value is not validated.
SeverityCritical
CVSS9.8
Exploit probability—
ProductAnyDesk
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-130CWE-130
How to fix
Update
- AnyDesk AnyDesk8.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| AnyDesk AnyDesk | 8.0.0 ≤ v < 8.0.3 | 8.0.3 |
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