CVE-2026-82312: openvpn Unrestricted Externally Accessible Lock
CVSS: 1.8v4.0LowAwaiting analysis
AliasesUBUNTU-CVE-2026-82312
Published 07-09-2026Last modified 08-09-2026
Vulnerability summary
CVE-2026-82312 is a low (CVSS 1.8) Unrestricted Externally Accessible Lock vulnerability in openvpn. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.8% of scored vulnerabilities.
CVSS score
1.8/10
010
Low · v4.0 (CVE.org)EPSS score
0.10%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-09-2026PublishedVulnerability first disclosed.
- 08-09-2026Last modifiedVulnerability information updated.
Description
OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects
CVSS metrics
3 scores · 3 sources · 1 versionLow 1.8Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated1.8LowCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H
- NVDNIST1.8LowCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.10%
Chance of exploitation in the next 30 days
Percentile
1%
Versus all other CVEs
30-day change
0.00 pp
From 0.10% on 21-09-2026
21-09-202621-10-2026
EPSS score0.10%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-412Unrestricted Externally Accessible LockThe product properly checks for the existence of a lock, but the lock can be externally controlled or influenced by an actor that is outside of the intended sphere of control.
- CWE-732Incorrect Permission Assignment for Critical ResourceThe product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Affected systems
Openvpn1 product
- openvpn≥ 2.0.0, ≤ 2.6.22 | ≥ 2.7_alpha1, ≤ 2.7.6
Ubuntu1 product
- openvpnAll versions (No fix recorded)
2 vendors · 2 products