CVE-2023-46850

criticalpriority · track · 40EPSS 0.020 · 81 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.00% (81st) EPSS

CVSS 9.8 · critical

Is it mine?

22 products

Check your exposure

Who says so?

8 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-23

Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

remediations

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

A vendor fix is available.

FixedSINEMA Remote Connect Clientsiemens_psirt
Update to V3.2 SP2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109974084/
FixedSINEMA Remote Connect Clientcisa_csaf_ot
Update to V3.2 SP2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109974084/

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

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

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

ssvc

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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimaryCWE-416USCWE-416USCWE-416USCWE-416US

affected products (22)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source OpenVPN <2.6.7all versionscert_bundDE
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source OpenVPN< 2.6.7cert_bundDE
SINEMA Remote Connect Clientall versionscisa_csaf_otUS
Siemens SINEMA Remote Connect Client< V3.2_SP2cisa_csaf_otUS
OpenVPN Access Server≤ 2.12.0 ≤2.12.2enisa_euvdEU
OpenVPN Access Server≤ 2.11.0 ≤2.11.3enisa_euvdEU
OpenVPN OpenVPN 2 (Community)≤ 2.6.0 ≤2.6.6enisa_euvdEU
OpenVPN, Inc. OpenVPN2.11.0 → 2.11.3fstec_bduRU
OpenVPN, Inc. OpenVPN= 2.12.2fstec_bduRU
OpenVPN, Inc. OpenVPN2.6.0 → 2.6.6fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
siemens sinema remote connect clientall versionsncsc_nlNLcpe:2.3:a:siemens:sinema_remote_connect_client:*:*:*:*:*:*:*:*
debian debian linux= 12.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 39nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
openvpn openvpn2.6.0 → 2.6.6nvdUScpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
openvpn openvpn access server2.11.0 → 2.11.3nvdUScpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*

showing 20 of 22

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2024-0362Kwetsbaarheden verholpen in Siemens productenNL2024-09-10csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten als Mendix, SICAM, SIMATIC, SINEMA, SINUMERIK en Tecnomatix.
SSA-417159SSA-417159: Multiple Vulnerabilities in SINEMA Remote Connect Client Before V3.2 SP22024-09-10csaf · siemens_psirtDE
SINEMA Remote Connect Client before V3.2 SP2 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Client and recommends to update to the latest version.
WID-SEC-W-2023-2872OpenVPN: Mehrere SchwachstellenDeutsch2023-11-09csaf · cert_bundDE
Ein entfernter authentifizierter Angreifer kann mehrere Schwachstellen in OpenVPN ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder vertrauliche Informationen offenzulegen.
ICSA-24-256-10Siemens SINEMA2024-09-10icsa · cisa_csaf_otUS
SINEMA Remote Connect Client before V3.2 SP2 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Client and recommends to update to the latest version.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisa_csaf_ot ncsc_nl nvd siemens_psirt NVD CVE.org MITRE

published 2023-11-11modified 2026-06-23

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+12087 more

references (14)

External citations — patches, advisories, analysis.

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