CVE-2026-84732
High
Description
Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow
SeverityHigh
CVSS8.7
Exploit probability—
ProductOpenVPN
PublishedSep 7, 2026
First seenSep 7, 2026
Weakness typeCWE-190Integer overflow
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenVPN OpenVPN | v ≤ 2.6.22, v ≤ 2.7.6 | — |
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