CVE-2018-6918

highpriority · track · 31EPSS 0.042 · 91 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

4.21% (91st) EPSS

CVSS 7.8 · high

Is it mine?

41 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, the length field of the ipsec option header does not count the size of the option header itself, causing an infinite loop when the length is zero. This issue can allow a remote attacker who is able to send an arbitrary packet to cause the machine to crash.

cvss

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

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.8

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-835USprimaryCWE-835US

affected products (41)

Products and version ranges known to be affected.

FreeBSD FreeBSD≤ All supported versions of FreeBSD.enisa_euvdEU
FreeBSD Project FreeBSD10.0 → 10.4fstec_bduRU
FreeBSD Project FreeBSD11.0 → 11.1fstec_bduRU
Juniper Networks Inc. JunOS15.1 → 15.1R7-S6fstec_bduRU
Juniper Networks Inc. JunOS15.1X49 → 15.1X49-D200fstec_bduRU
Juniper Networks Inc. JunOS15.1X53 → 15.1X53-D593fstec_bduRU
Juniper Networks Inc. JunOS16.1 → 16.1R7-S7fstec_bduRU
Juniper Networks Inc. JunOS16.2 → 16.2R2-S11fstec_bduRU
Juniper Networks Inc. JunOS17.1 → 17.1R3-S2fstec_bduRU
Juniper Networks Inc. JunOS17.1 → 17.1R2-S11fstec_bduRU
Juniper Networks Inc. JunOS17.2 → 17.2X75-D44fstec_bduRU
Juniper Networks Inc. JunOS17.2 → 17.2R3-S3fstec_bduRU
Juniper Networks Inc. JunOS17.2X75 → 17.2X75-D110fstec_bduRU
Juniper Networks Inc. JunOS17.2X75 → 17.2X75-D105fstec_bduRU
Juniper Networks Inc. JunOS17.3 → 17.3R3-S7fstec_bduRU
Juniper Networks Inc. JunOS17.3 → 17.3R2-S5fstec_bduRU
Juniper Networks Inc. JunOS17.4 → 17.4R2-S9fstec_bduRU
Juniper Networks Inc. JunOS17.4 → 17.4R3fstec_bduRU
Juniper Networks Inc. JunOS18.1 → 18.1R3-S9fstec_bduRU
Juniper Networks Inc. JunOS18.2 → 18.2R2-S6fstec_bduRU

showing 20 of 41

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2018-04-04modified 2026-06-17

related (1,375)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2024-20353US	high8.6OT critical	69.8% (99th)	KEV	2024-04-24
A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthen…
CVE-2020-13935US	high7.5	86.6% (100th)	Exploit	2020-07-14
The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payl…
CVE-2014-0050US	high7.5	83.3% (100th)	Exploit	2014-04-01
MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other products, allows remote attackers to cause a denial of service (infin…
CVE-2021-21341US	high7.5	77.8% (100th)	Exploit	2021-03-23
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CP…
CVE-2022-0778US	high7.5	73.2% (99th)	Exploit	2022-03-15
The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsi…

+1370 more

references (31)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan