CVE-2026-84732

highpriority · track · 0EPSS 0.003 · 26 %ileDEFR

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.34% (26th) EPSS

CVSS 8.7 · high

Is it mine?

4 products

Check your exposure

Who says so?

2 sources

cert_bund · certfr

EPSS · scored 2026-10-22

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

cvss

Technical severity, 0–10. One row per scoring source.

8.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security@openvpn.net

v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190US

affected products (4)

Products and version ranges known to be affected.

SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source OpenVPN< 2.7.7cert_bundDE

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3202OpenVPN: Mehrere SchwachstellenDeutsch2026-09-06csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in OpenVPN ausnutzen, um Code auszuführen, Daten zu manipulieren oder einen Denial of Service zu verursachen.
CERTFR-2026-AVI-1345Multiples vulnérabilités dans les produits StormShieldFrançais2026-10-21vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund certfr NVD CVE.org MITRE

published 2026-09-07modified 2026-09-08

references (1) nvd

External citations — patches, advisories, analysis.

https://community.openvpn.net/Security%20Announcements/CVE-2026-84732

scry

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