High severity · published Sep 7, 2026
CVE-2026-84732
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…
8.7
CVSS
0.3%
EPSS
No
On KEV
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
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenVPN · OpenVPN
through 2.6.22; through 2.7.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84732
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84732
community.openvpn.net
https://community.openvpn.net/Security%20Announcements/CVE-2026-84732
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