What’s Vulnerable › Vulnerabilities

CVE-2023-37187

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-12-25 · updated 2026-06-17
• Weakness: CWE-476

Description

C-blosc2 before 2.9.3 was discovered to contain a NULL pointer dereference via the zfp/blosc2-zfp.c zfp_acc_decompress. function.

Affected products

• c-blosc2: before 2.9.3 — fixed in 2.9.3

How to fix

Upgrade to a fixed version: c-blosc2 2.9.3. Check the vendor advisory for mitigations.

References

• https://github.com/Blosc/c-blosc2/commit/425e8a9a59d49378d57e2116b6c9b0190a5986f5
• https://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3
• https://github.com/Blosc/c-blosc2/issues/520
• https://github.com/Blosc/c-blosc2/commit/425e8a9a59d49378d57e2116b6c9b0190a5986f5
• https://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3
• https://github.com/Blosc/c-blosc2/issues/520

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