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CVE-2020-22845

25
FAUCET Score

CVE-2020-22845 describes a buffer overflow vulnerability in Mikrotik RouterOS version 6.47, allowing unauthenticated attackers to trigger a denial of service (DoS) through specially crafted FTP requests. This high-severity vulnerability (CVSS 7.5) is easily exploitable over the network with low attack complexity, impacting system availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations should still patch affected systems to mitigate potential DoS attacks.

Impacted Technologies

VendorProductVersion(s)CPE
6.47CPE matchmatch criteria
cpe:2.3:o:mikrotik:routeros:6.47:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 46th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / colorlight/mikrotik_poc/blob/master/two_vulns.md
Third Party Advisory
mikrotik.com / support
Product