CVE-2024-28882Network attack vector

Session retention via repeated exit notifications

Published Jul 8, 2024 · Updated Nov 1, 2024

Improper session termination in OpenVPN 2.6.0 through 2.6.10 allows remote authenticated users to retain a closing VPN session. In server mode, receive_exit_message repeatedly calls schedule_exit for client exit notifications, resetting the delayed SIGTERM timer before it fires. An authenticated client can therefore prevent a management-interface client-kill command from disconnecting its session, retaining tunnel access beyond the intended cutoff.

CVSS severity4.3
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper session termination in OpenVPN 2.6.0 through 2.6.10 allows remote authenticated users to retain a closing VPN session. In server mode, receive_exit_message repeatedly calls schedule_exit for client exit notifications, resetting the delayed SIGTERM timer before it fires. An authenticated client can therefore prevent a management-interface client-kill command from disconnecting its session, retaining tunnel access beyond the intended cutoff.

The record

CVE
CVE-2024-28882
Published
Jul 8, 2024
Updated
Nov 1, 2024
Vendor
OpenVPN Inc.
Product
OpenVPN
Classifications
CWE-772
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.0 <=2.6.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenVPN Inc. · OpenVPNversion=2.6.0 <=2.6.10

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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