How severe is CVE-2019-18252?

CVE-2019-18252 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-18252 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18252?

CVE-2019-18252 primarily affects Biotronik Cardiomessenger Ii-s Gsm Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-18252?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-18252 published?

CVE-2019-18252 was published on 2020-06-29 and last updated on 2026-06-17.

CVE-2019-18252

CVE-2019-18252 is a medium-severity vulnerability in Biotronik Cardiomessenger Ii-s Gsm Firmware with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 3.3
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Biotronik Cardiomessenger Ii-s Gsm Firmware
Published: 2020-06-29
Last modified: 2026-06-17

Description

BIOTRONIK CardioMessenger II, The affected products allow credential reuse for multiple authentication purposes. An attacker with adjacent access to the CardioMessenger can disclose its credentials used for connecting to the BIOTRONIK Remote Communication infrastructure.

Frequently asked questions

What is CVE-2019-18252?: BIOTRONIK CardioMessenger II, The affected products allow credential reuse for multiple authentication purposes. An attacker with adjacent access to the CardioMessenger can disclose its credentials used for connecting to the BIOTRONIK Remote Communication infrastructure.
How severe is CVE-2019-18252?: CVE-2019-18252 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-18252 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18252?: CVE-2019-18252 primarily affects Biotronik Cardiomessenger Ii-s Gsm Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-18252?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18252 published?: CVE-2019-18252 was published on 2020-06-29 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsma-20-170-05

Affected products (2)

cpe:2.3:o:biotronik:cardiomessenger_ii-s_gsm_firmware:2.20:*:*:*:*:*:*:*
cpe:2.3:o:biotronik:cardiomessenger_ii-s_t-line_firmware:2.20:*:*:*:*:*:*:*

More vulnerabilities in Biotronik Cardiomessenger Ii-s Gsm Firmware

CVE-2019-18256 — Medium (CVSS 4.6): BIOTRONIK CardioMessenger II, The affected products use individual per-device credentials that are stored in a…
CVE-2019-18254 — Medium (CVSS 4.6): BIOTRONIK CardioMessenger II, The affected products do not encrypt sensitive information while at rest. An attacker…
CVE-2019-18248 — Medium (CVSS 4.3): BIOTRONIK CardioMessenger II, The affected products transmit credentials in clear-text prior to switching to an…
CVE-2019-18246 — Medium (CVSS 4.3): BIOTRONIK CardioMessenger II, The affected products do not properly enforce mutual authentication with the BIOTRONIK…

All CVEs affecting Biotronik Cardiomessenger Ii-s Gsm Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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