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CVE-2020-20249

22
FAUCET Score

CVE-2020-20249 is a memory corruption vulnerability in Mikrotik RouterOS versions prior to stable 6.47, specifically affecting the resolver process. An authenticated remote attacker can exploit this by sending a crafted packet, leading to a Denial of Service (DoS). With a CVSS score of 6.5 (Medium), this vulnerability requires authenticated access but has low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

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

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 88th percentile among its peer group of 21,883 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

github.com / cq674350529/pocs_slides/blob/master/advisory/MikroTik/CVE-2020-20249/README.md
ExploitThird Party Advisory