CVE-2023-41913

criticalpriority · track · 40EPSS 0.023 · 83 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.31% (83rd) EPSS

CVSS 9.8 · critical

Is it mine?

61 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.

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 · high–critical · 7–9.8

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

v3.17highAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · 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

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-119US

affected products (61)

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 strongSwan <5.8.2-1ubuntu3.6all versionscert_bundDE
Open Source strongSwan <5.9.1-1+deb11u4all versionscert_bundDE
Open Source strongSwan <5.9.11-1ubuntu1.1all versionscert_bundDE
Open Source strongSwan <5.9.5-2ubuntu2.2all versionscert_bundDE
Open Source strongSwan <5.9.8-3ubuntu4.1all versionscert_bundDE
Open Source strongSwan <5.9.8-5+deb12u1all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source strongSwan< 5.8.2-1ubuntu3.6cert_bundDE
Open Source strongSwan< 5.9.1-1+deb11u4cert_bundDE
Open Source strongSwan< 5.9.11-1ubuntu1.1cert_bundDE
Open Source strongSwan< 5.9.5-2ubuntu2.2cert_bundDE
Open Source strongSwan< 5.9.8-3ubuntu4.1cert_bundDE
Open Source strongSwan< 5.9.8-5+deb12u1cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 23.10fstec_bduRU
Canonical Ltd. Ubuntu≤ 23.04fstec_bduRU

showing 20 of 61

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2972strongSwan: Schwachstelle ermöglicht Codeausführung und DoSDeutsch2023-11-20csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in strongSwan ausnutzen, um beliebigen Code auszuführen oder einen Denial-of-Service-Zustand zu verursachen.

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 CVE.org MITRE

published 2023-12-07modified 2026-06-17

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+5664 more

references (17)

External citations — patches, advisories, analysis.

scry

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