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BitBox02 Firmware 9.26.5 Addresses Three Security Vulnerabilities

BitBox02 Firmware 9.26.5 Addresses Three Security Vulnerabilities

First seen 23 Aug 2026, 03:31 UTC • •

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ThreatCluster AI
ThreatCluster •August 24, 2026 at 02:14 UTC
  • •Firmware version 9.26.5 released on August 17, 2026, addresses three vulnerabilities.
  • •No reports of stolen funds; existing recovery phrases remain valid.
  • •Users must update devices running firmware versions up to 9.26.1 to mitigate risks.

On August 17, 2026, BitBox released firmware version 9.26.5, named Dixence, to address three security vulnerabilities in the BitBox02 and BitBox02 Nova hardware wallets. The manufacturer confirmed that no user funds were stolen and existing recovery phrases remain valid. Users are advised to update their devices and check which vulnerabilities may affect them. Two of the vulnerabilities were newly identified in this version, while the third was previously addressed in the July update. The update is crucial for devices running firmware versions up to 9.26.1, as these are the ones affected. The BitBox02 Nova is not impacted by the vulnerabilities. The article emphasizes the importance of not reacting hastily to security notices and provides guidance on the update process.

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Timeline

2026-07-31
Coldcard firmware flaw reported
A firmware flaw in Coldcard was reported, leading to actual fund loss and compromised seeds.
Cryptoticker
2026-08-17
BitBox02 firmware 9.26.5 released
Firmware version 9.26.5, named Dixence, was released to patch three vulnerabilities.
Cryptoticker
2026-08-22
Articles published on firmware update
Both Cryptoticker and Kucoin published articles detailing the vulnerabilities and update instructions.
Cryptoticker
2026-08-22
No exploitation reported
BitBox confirmed that there were no reports of exploitation related to the vulnerabilities in the firmware.
Kucoin

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