CVE-2026-81738

unknown

Assigned by CNA: openvpn

Published 2026-09-07 · Modified 2026-09-07

Discuss on Community Propose mitigation

CVSS v3

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CVSS v4 NEW

2.3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L

VIR risk

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Description

OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Debian Fixed 4 releases

Version	Status	Fixed in
trixie	Fixed	`0`
sid	Fixed	`0`
forky	Fixed	`0`
bookworm	Fixed	`0`

References

CWEs

CWE-121 CWE-193 CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.