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CVE-2026-84471

Quick assessment

Affected
OpenVPN OpenVPN
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CVE-2026-12996 的修复不完整。OpenVPN 2.6.0 至 2.6.22 以及 2.7_alpha1 至 2.7.7 版本中存在一个使用后释放（use-after-free）漏洞。远程经过身份验证的对等方可能通过构造的恶意数据包，在 TLS 会话升级或过期时导致拒绝服务（DoS）或内存泄露。

CVSS 7.2 · High EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
OpenVPN OpenVPN 2.6.0≤ 2.6.22 affected
2.7_alpha1≤ 2.7.7 affected
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I. Basic Information for CVE-2026-84471

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenVPN OpenVPN 2.6.0 ~ 2.6.22 -

II. Public POCs for CVE-2026-84471

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-84471

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Other References for CVE-2026-84471 (1)

IV. Related Vulnerabilities

Same product: OpenVPN
Same vendor: OpenVPN
Same weakness: CWE-416

V. Comments for CVE-2026-84471

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