CVE-2025-30334 | OpenBSD wg(4) kernel crash

In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.

Published: 2025-03-20 Last update: 2026-06-17 Assigner: 9119a7d8-5eab-497f-8521-727c672e3725 Source: 9119a7d8-5eab-497f-8521-727c672e3725
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-30334 is rated Low Risk (38.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.37%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2025-30334

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 2026-06-15 0.22% 0.37% +0.15%
2 2026-04-29 0.30% 0.22% -0.08%
3 2026-04-28 — 0.30% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-30334

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 4.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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 Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — 9119a7d8-5eab-497f-8521-727c672e3725
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:L)
A normal user session is enough; they don’t have to be admin.
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:N)
Doesn’t really leak secrets in a meaningful 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.
 2.8 3.6 9119a7d8-5eab-497f-8521-727c672e3725

Weakness enumeration for CVE-2025-30334

Affected software / configurations for CVE-2025-30334

Vendor Product Version Raw CPE
openbsd openbsd < 7.5 cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:-:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_001:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_002:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_003:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_004:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_005:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_006:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_007:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_008:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_009:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_010:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_011:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_012:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_013:*:*:*:*:*:*
openbsd openbsd 7.5 cpe:2.3:o:openbsd:openbsd:7.5:errata_014:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:-:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:errata_001:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:errata_002:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:errata_003:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:errata_004:*:*:*:*:*:*
openbsd openbsd 7.6 cpe:2.3:o:openbsd:openbsd:7.6:errata_005:*:*:*:*:*:*

References for CVE-2025-30334

cvelogic Threat Intelligence