CVE-2025-12106

Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses

Published: 2025-12-01 Last update: 2025-12-30 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-12106 is rated Moderate Risk (42.4/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.06%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-12106

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-02 — 0.06% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-12106

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-12106

OS Trackers for CVE-2025-12106

vendor priority summary link
alpine — CVE-2025-12106: 1 source package rows (openvpn); 1 state rows across 1 repos (edge-main); fixed 0, open 1. https://security.alpinelinux.org/vuln/CVE-2025-12106
debian unimportant CVE-2025-12106 unimportant priority: Debian including 1 source packages (openvpn), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-12106
suse high CVE-2025-12106 severity important: SUSE including 4 source package names (openvpn, openvpn-auth-pam-plugin, openvpn-devel, openvpn-down-root-plugin), 69 product×package rows across 27 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (27 product lines)): Known Not Affected 69. https://www.suse.com/security/cve/CVE-2025-12106/
ubuntu medium CVE-2025-12106 medium priority: Ubuntu including 1 source packages (openvpn), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): not-affected 9. https://ubuntu.com/security/CVE-2025-12106

Affected software / configurations for CVE-2025-12106

Vendor Product Version Raw CPE
openvpn openvpn 2.6.13 cpe:2.3:a:openvpn:openvpn:2.6.13:*:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:alpha1:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:alpha2:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:alpha3:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:beta1:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:beta2:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:beta3:*:*:community:*:*:*
openvpn openvpn 2.7 cpe:2.3:a:openvpn:openvpn:2.7:rc1:*:*:community:*:*:*

References for CVE-2025-12106

cvelogic Threat Intelligence