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CVE-2020-27252

25
FAUCET Score

CVE-2020-27252 describes a race condition in the Medtronic MyCareLink Smart 25000 Patient Reader software update system, allowing unsigned firmware to be uploaded and executed. This vulnerability carries a CVSS score of 8.1 (HIGH) due to its network-based attack vector, high impact on confidentiality, integrity, and availability, and the potential for remote code execution and full device control. While the attack complexity is high, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing. However, it has garnered some community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:medtronic:mycarelink_smart_model_25000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.68%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0368 is in the 49th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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

us-cert.cisa.gov / ics/advisories/icsma-20-345-01
Third Party AdvisoryUS Government Resource
global.medtronic.com / xg-en/product-security/security-bulletins/mycarelink-smart-security-vulnerability-patch.html
cisa.gov / news-events/ics-medical-advisories/icsma-20-345-01