What’s Vulnerable › Vulnerabilities

CVE-2023-41097: Potential Timing vulnerability in CBC PKCS7 padding calculations

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-21 · updated 2026-06-17
• Weakness: CWE-208

Description

An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.

Affected products

• silabs.com Gecko Platform: through 4.4.0

References

• https://github.com/SiliconLabs/gecko_sdk/releases
• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm0000007rArIAI?operationContext=S1
• https://github.com/SiliconLabs/gecko_sdk/releases
• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm0000007rArIAI?operationContext=S1

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