High severity · published Feb 28, 2022
CVE-2020-22844
A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RO
Routeros · Mikrotik
6.47 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-22844
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-22844
Third Party Advisory
https://github.com/colorlight/mikrotik_poc/blob/master/two_vulns.md
Vendor Advisory
https://mikrotik.com/support
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