Page generated: 08 Nov 2026, 15:37 UTC
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CVE-2018-7445

A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes pla…

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A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running RouterOS before versions 6.41.3/6.42rc27 are vulnerable.
CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.8/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 65.83%: +0.33

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 6 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 09 Dec 2021, 08:00 · Over 300,000 MikroTik Devices Found Vulnerable to Remote Hacking Bugs - The Hacker News
csoonline.com
Press · 09 Dec 2021, 08:00 · Researchers warn about continuous abuse of unpatched MikroTik routers - csoonline.com
BleepingComputer
Press · 09 Dec 2021, 08:00 · Hundreds of thousands of MikroTik devices still vulnerable to botnets - BleepingComputer
Securelist
Press · 18 Sep 2018, 07:00 · New trends in the world of IoT threats - Securelist
Securelist
Press · 12 Apr 2018, 07:00 · APT Trends report Q1 2018 - Securelist
See all 6 source documents
Security Affairs
Press · 19 Mar 2018, 07:00 · Experts discovered remotely exploitable buffer overflow vulnerability in MikroTik RouterOS - Security Affairs

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.8 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 65.8%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:01.757148+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
19 Mar 2018, 07:00
Published
19 Mar 2018, 21:00
Latest press mention
09 Dec 2021, 08:00
Added to the CISA KEV catalog
08 Sep 2022, 00:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories