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CVE-2023-46850

Openvpn use-after-free

9.8 CRITICALEPSS 2.00%
  1. Published11 Nov 2023

Description

Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Openvpn Access Server≥ 2.11.0 ≤ 2.11.3 · ≥ 2.12.0 < 2.12.2
Openvpn≥ 2.6.0 ≤ 2.6.6
Debian Linux12.0
Fedoraproject Fedora39

Remediation

Fixed in
Openvpn Access Server≥ 2.12.2

References

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Frequently asked

Is CVE-2023-46850 being actively exploited?

CVE-2023-46850 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.00%.

How severe is CVE-2023-46850?

CVE-2023-46850 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.00% probability of exploitation.

Which products are affected by CVE-2023-46850?

Affected products include Openvpn Access Server, Openvpn, Debian Linux, Fedoraproject Fedora.

How do I fix CVE-2023-46850?

Upgrade affected software to a fixed version, for example Openvpn Access Server 2.12.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-46850 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.