CVE-2022-0547

highpriority · track · 40EPSS 0.036 · 89 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
3.57% (89th) EPSS
CVSS 7.5 · high
Is it mine?
90 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-23

OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 4.8–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US
v3.14.8mediumAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Phoenix Contact PSIRT DE
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287USCWE-287USCWE-287USCWE-287USCWE-305US
05

affected products (90)

Products and version ranges known to be affected.

showing 20 of 90
06

advisories (6)

Vendor and ecosystem advisories describing this.

  • SSA-419740SSA-419740: Multiple Third-Party Component Vulnerabilities in RUGGEDCOM and SCALANCE Products before V7.22023-03-14csaf · siemens_psirtDE

    Multiple third-party component vulnerabilities were reported for the Busybox applet, the Linux Kernel, OpenSSL, OpenVPN and various other components used by the RUGGEDCOM and SCALANCE products. The vulnerabilities range from improper neutralization of special elements to improper handling of commands under certain circumstances, that could lead to code injection and denial of service. Siemens has released updates for the affected products and recommends to update to the latest versions.

  • SSA-942865SSA-942865: Multiple Vulnerabilities in the Integrated SCALANCE S615 of SINAMICS Medium Voltage Products2023-06-13csaf · siemens_psirtDE

    SINAMICS PERFECT HARMONY GH180 is affected by multiple vulnerabilities in the integrated SCALANCE S615 device, as documented in SSA-419740 ( https://cert-portal.siemens.com/productcert/html/ssa-419740.html). Siemens recommends to update the firmware of the integrated SCALANCE S615 device to the latest version. Siemens recommends specific countermeasures for products where the firmware update is not, or not yet applied. Additional considerations regarding the specific impact of the vulnerabilities to SINAMICS MV products can be found in the chapter "Additional Information".

  • VDE-2022-046PHOENIX CONTACT: Multiple Linux component vulnerabilities in PLCnext Firmware2022-11-10csaf · phoenix_contact_psirtDE

    UPDATE A: Two devices (ENERGY AXC PU, SMARTRTU AXC SG) added (24.11.2022) Update for PLCnext Firmware containing fixes for recent vulnerability findings in Linux components and security enhancements. PLCnext Control AXC F x152 is certified according to IEC 62443-4-1 and IEC 62443-4-2. This certification requires that all third-party components used in the firmware are regularly checked for known vulnerabilities.

  • WID-SEC-W-2022-0116OpenVPN: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2022-03-16csaf · cert_bundDE

    Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in OpenVPN ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

  • ICSA-23-075-01Siemens SCALANCE, RUGGEDCOM Third-Party2023-03-14icsa · cisa_csaf_otUS

    Multiple third-party component vulnerabilities were reported for the Busybox applet, the Linux Kernel, OpenSSL, OpenVPN and various other components used by the RUGGEDCOM and SCALANCE products. The vulnerabilities range from improper neutralization of special elements to improper handling of commands under certain circumstances, that could lead to code injection and denial of service. Siemens has released updates for the affected products and recommends to update to the latest versions.

  • ICSA-23-166-12Siemens SINAMICS Medium Voltage Products2023-06-13icsa · cisa_csaf_otUS

    SINAMICS PERFECT HARMONY GH180 is affected by multiple vulnerabilities in the integrated SCALANCE S615 device, as documented in SSA-419740 ( https://cert-portal.siemens.com/productcert/html/ssa-419740.html). Siemens recommends to update the firmware of the integrated SCALANCE S615 device to the latest version. Siemens recommends specific countermeasures for products where the firmware update is not, or not yet applied. Additional considerations regarding the specific impact of the vulnerabilities to SINAMICS MV products can be found in the chapter "Additional Information".

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisa_csaf_otsiemens_psirtphoenix_contact_psirtNVDCVE.orgMITRE
published 2022-03-18modified 2026-06-17
10

references (25)

External citations — patches, advisories, analysis.

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