How severe is CVE-2026-20997?

CVE-2026-20997 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-20997 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20997?

CVE-2026-20997 affects Samsung Smart Switch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20997?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-20997 have an EU (EUVD) identifier?

Yes. CVE-2026-20997 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12311.

When was CVE-2026-20997 published?

CVE-2026-20997 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2026-20997

CVE-2026-20997 is a critical-severity vulnerability in Samsung Smart Switch with a CVSS 3.x base score of 9.8. 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-347.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 5.3
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12311
Weakness: CWE-347
Affected product: Samsung Smart Switch
Published: 2026-03-16
Last modified: 2026-06-17

Description

Improper verification of cryptographic signature in Smart Switch prior to version 3.7.69.15 allows remote attackers to potentially bypass authentication.

Frequently asked questions

What is CVE-2026-20997?: Improper verification of cryptographic signature in Smart Switch prior to version 3.7.69.15 allows remote attackers to potentially bypass authentication.
How severe is CVE-2026-20997?: CVE-2026-20997 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-20997 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20997?: CVE-2026-20997 affects Samsung Smart Switch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20997?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-20997 have an EU (EUVD) identifier?: Yes. CVE-2026-20997 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12311.
When was CVE-2026-20997 published?: CVE-2026-20997 was published on 2026-03-16 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=03

Affected products (1)

cpe:2.3:a:samsung:smart_switch:*:*:*:*:*:*:*:*

More vulnerabilities in Samsung Smart Switch

CVE-2026-20998 — Critical (CVSS 9.8): Improper authentication in Smart Switch prior to version 3.7.69.15 allows remote attackers to bypass authentication.
CVE-2025-21078 — High (CVSS 8.8): Use of insufficiently random value of secretKey in Smart Switch prior to version 3.7.68.6 allows adjacent attackers to…
CVE-2025-21064 — High (CVSS 8.8): Improper authentication in Smart Switch prior to version 3.7.66.6 allows adjacent attackers to access transferring data.
CVE-2025-21062 — High (CVSS 7.8): Use of a broken or risky cryptographic algorithm in Smart Switch prior to version 3.7.67.2 allows local attackers to…
CVE-2026-20999 — High (CVSS 7.5): Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger…
CVE-2025-21061 — High (CVSS 7.1): Cleartext storage of sensitive information in Smart Switch prior to version 3.7.67.2 allows local attackers to access…

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