CVE-2024-3661

highpriority · track · 41OT risk · elevatedEPSS 0.041 · 91 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

4.06% (91st) EPSS

CVSS 7.6 · high

Is it mine?

39 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.

cvss

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

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.6highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Lprimary · NVD / NIST USexploitability 2.8 · impact 4.7

v3.17.3highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.17.6highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Lsecondary · ENISA EU

v3.17.6highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Lsecondaryexploitability 2.8 · impact 4.7

v3.17.2highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:Psecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-306USCWE-501USCWE-501US

exploits (3)

Public proof-of-concept and weaponised exploit code.

Roundthe-clock/CVE-2024-3661VPNRoundthe-clock/CVE-2024-3661VPNPoC · poc_in_github
Wh1t3Fox/CVE-2024-3661CVE-2024-3661 TunnelVisionPoC · poc_in_github
YardenFadida/CVE-2024-3661_DemoDemo TunnelVision vulnerability for VPN using DHCP option 121 PoC · poc_in_github

affected products (39)

Products and version ranges known to be affected.

Apple iOSall versionscert_bundDEcpe:/o:apple:iphone_os:-
Apple macOSall versionscert_bundDEcpe:/o:apple:mac_os:-
Citrix Systems Citrix Gatewayall versionscert_bundDEcpe:/h:citrix:gateway:-
Citrix Systems NetScalerall versionscert_bundDEcpe:/a:citrix:netscaler:-
F5 BIG-IP 15.1.0-15.1.10all versionscert_bundDEcpe:/a:f5:big-ip:15.1.0_-_15.1.10
F5 BIG-IP 16.1.0-16.1.4all versionscert_bundDEcpe:/a:f5:big-ip:16.1.0_-_16.1.4
F5 BIG-IP 17.1.0-17.1.1all versionscert_bundDEcpe:/a:f5:big-ip:17.1.0_-_17.1.1
F5 BIG-IP ARM Clients 7.2.3-7.2.4all versionscert_bundDEcpe:/a:f5:big-ip:7.2.3_-_7.2.4::arm_clients
Fortinet FortiClientall versionscert_bundDEcpe:/a:fortinet:forticlient:-
IBM QRadar SIEM <7.5.0 UP11 IF02all versionscert_bundDE
Microsoft Windowsall versionscert_bundDEcpe:/o:microsoft:windows:-
Open Source Linuxall versionscert_bundDEcpe:/o:open_source:linux:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Palo Alto Networks GlobalProtect appall versionscert_bundDEcpe:/a:paloaltonetworks:globalprotect:app
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
IBM QRadar SIEM< 7.5.0 UP11 IF02cert_bundDE
IETF dhcp≤ 0enisa_euvdEU
Apple Inc. MacOSall versionsfstec_bduRU
Apple Inc. iOSall versionsfstec_bduRU
Microsoft Corp Windowsall versionsfstec_bduRU

showing 20 of 39

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1047VPN Clients / DHCP: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2024-05-06csaf · cert_bundDE
Ein Angreifer aus einem angrenzenden Netzwerk kann eine Schwachstelle in VPN-Clients ausnutzen, die auf DHCP konfigurierten Systemen laufen, um den Datenverkehr umzuleiten.

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 2024-05-06modified 2026-06-17

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+4459 more

references (56)

External citations — patches, advisories, analysis.

scry

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