HOMEVULNERABILITIESCVE-2018-5951
HIGH

CVE-2018-5951

NVD-CWE-noinfoPublished: March 2, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An issue was discovered in Mikrotik RouterOS. Crafting a packet that has a size of 1 byte and sending it to an IPv6 address of a RouterOS box with IP Protocol 97 will cause RouterOS to reboot imminently. All versions of RouterOS that supports EoIPv6 are vulnerable to this attack.

NVD Source

Technical Analysis

CVE-2018-5951 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

mikrotik1 product(s)
routeros
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/Nat-Lab/CVE-2018-5951
ADVISORYhttps://github.com/Nat-Lab/CVE-2018-5951

All References (2)

→
https://github.com/Nat-Lab/CVE-2018-5951Exploit · Third Party Advisory
→
https://github.com/Nat-Lab/CVE-2018-5951Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2018-5951
CVSS Score7.5 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedMar 2, 2020

Related CVEs (NVD-CWE-noinfo)

CVE-2009-3092
10.0
CVE-2009-2543
10.0
CVE-2012-0124
10.0
CVE-2012-1002
10.0
CVE-2013-2422
10.0
CVE-2021-46250
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-5951 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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