What’s Vulnerable › Vulnerabilities

CVE-2021-25471

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-06 · updated 2026-06-17
• Weakness: CWE-20

Description

A lack of replay attack protection in Security Mode Command process prior to SMR Oct-2021 Release 1 can lead to denial of service on mobile network connection and battery depletion.

Affected products

• Android: 8.1, 9.0, 10.0

References

• https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10
• https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10

Get alerted when CVE-2021-25471 or the next vulnerability affects your stack