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CVE-2020-20250

MEDIUM

6.5

CVSS Score

Published: July 13, 2021 at 11:59 AM UTC

Updated: June 17, 2026 at 03:02 AM UTC

1 product affected across 1 vendorRouterOS

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Severity

MEDIUM6.5

Exploit prediction

EPSS 2%

Description

Mikrotik RouterOs before stable version 6.47 suffers from a memory corruption vulnerability in the /nova/bin/lcdstat process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference). NOTE: this is different from CVE-2020-20253 and CVE-2020-20254. All four vulnerabilities in the /nova/bin/lcdstat process are discussed in the CVE-2020-20250 github.com/cq674350529 reference.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

RouterOS · Mikrotik

95%

v < 6.47

Affected range stops below 6.47, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://mikrotik.com/

References (2)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://github.com/cq674350529/pocs_slides/blob/master/advisory/MikroTik/CVE-2020-20250/README.md

x_refsource_MISCVendor Advisory

Source: [email protected]

https://mikrotik.com/

CVSS

6.5MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-476CWE-787

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