How severe is CVE-2025-27839?

CVE-2025-27839 has a CVSS 3.x base score of 3.2, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-27839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27839?

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

Does CVE-2025-27839 have an EU (EUVD) identifier?

Yes. CVE-2025-27839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7815.

When was CVE-2025-27839 published?

CVE-2025-27839 was published on 2025-03-08 and last updated on 2026-06-17.

CVE-2025-27839

CVE-2025-27839 is a low-severity vulnerability with a CVSS 3.x base score of 3.2. 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-1025.

Key facts

Severity: Low (CVSS 3.x base score 3.2)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7815
Weakness: CWE-1025
Published: 2025-03-08
Last modified: 2026-06-17

Description

operations/attestation/AttestationTask.kt in the Tangem SDK before 5.18.3 for Android has a logic flow in offline wallet attestation (genuineness check) that causes verification results to be disregarded during the first scan of a card. Exploitation may not have been possible.

Frequently asked questions

What is CVE-2025-27839?: operations/attestation/AttestationTask.kt in the Tangem SDK before 5.18.3 for Android has a logic flow in offline wallet attestation (genuineness check) that causes verification results to be disregarded during the first scan of a card. Exploitation may not have been possible.
How severe is CVE-2025-27839?: CVE-2025-27839 has a CVSS 3.x base score of 3.2, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-27839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-27839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-27839 have an EU (EUVD) identifier?: Yes. CVE-2025-27839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7815.
When was CVE-2025-27839 published?: CVE-2025-27839 was published on 2025-03-08 and last updated on 2026-06-17.

References

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