What’s Vulnerable › Vulnerabilities

CVE-2020-27207

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-26 · updated 2026-06-17
• Weakness: CWE-416

Description

Zetetic SQLCipher 4.x before 4.4.1 has a use-after-free, related to sqlcipher_codec_pragma and sqlite3Strlen30 in sqlite3.c. A remote denial of service attack can be performed. For example, a SQL injection can be used to execute the crafted SQL command sequence. After that, some unexpected RAM data is read.

Affected products

• Zetetic SQLCipher: from 4.0 before 4.4.1 — fixed in 4.4.1

How to fix

Upgrade to a fixed version: Zetetic SQLCipher 4.4.1. Check the vendor advisory for mitigations.

References

• https://github.com/sqlcipher/sqlcipher/compare/v4.4.0...v4.4.1
• https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
• https://www.telekom.com/resource/blob/612796/9f221708832a465f03585a45d7f59b45/dl-201112-denial-of-serviceen-data.pdf
• https://github.com/sqlcipher/sqlcipher/compare/v4.4.0...v4.4.1
• https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
• https://www.telekom.com/resource/blob/612796/9f221708832a465f03585a45d7f59b45/dl-201112-denial-of-serviceen-data.pdf

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