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CVE-2021-30354

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-01 · updated 2026-06-17
• Weakness: CWE-680

Description

Amazon Kindle e-reader prior to and including version 5.13.4 contains an Integer Overflow that leads to a Heap-Based Buffer Overflow in function CJBig2Image::expand() and results in a memory corruption that leads to code execution when parsing a crafted PDF book.

Affected products

• Amazon Kindle e-reader: through 5.13.4

References

• https://research.checkpoint.com/2021/i-can-take-over-your-kindle/
• https://research.checkpoint.com/2021/i-can-take-over-your-kindle/

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