CVE-2023-46849

highpriority · track · 30EPSS 0.012 · 67 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.15% (67th) EPSS

CVSS 7.5 · high

Is it mine?

19 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-369USprimaryCWE-369US

affected products (19)

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
OpenVPN Access Server≤ 2.11.0 ≤2.11.3enisa_euvdEU
OpenVPN Access Server≤ 2.12.0 ≤2.12.1enisa_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
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:*:*:*:*:*:*:*:*
openvpn openvpn access server= 2.12.0nvdUScpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*
openvpn openvpn access server= 2.12.1nvdUScpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

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.

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 nvd NVD CVE.org MITRE

published 2023-11-11modified 2026-06-17

related (580)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2012-0207US	high7.5	20.3% (97th)	Exploit	2012-05-17
The igmp_heard_query function in net/ipv4/igmp.c in the Linux kernel before 3.2.1 allows remote attackers to cause a denial of service (divide-by-zero error and panic) via IGMP pac…
CVE-2017-11720US	critical9.8	2.49% (85th)	—	2017-07-28
There is a division-by-zero vulnerability in LAME 3.99.5, caused by a malformed input file.
CVE-2017-8537US	medium5.5	16.8% (97th)	Exploit	2017-05-26
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S…
CVE-2017-8536US	medium5.5	16.8% (97th)	Exploit	2017-05-26
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S…
CVE-2017-8535US	medium5.5	16.8% (97th)	Exploit	2017-05-26
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S…

+575 more

references (14)

External citations — patches, advisories, analysis.

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