Is there a public exploit for CVE-2026-122330?

No public exploit for CVE-2026-122330 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-122330?

CVE-2026-122330 scores CVSS 6.8 (v4.0), rated medium.

What does CVE-2026-122330 affect?

CVE-2026-122330 affects Blosc c-blosc2.

6.8 Medium

Blosc c-blosc2 before 3.5.0 contains a divide-by-zero vulnerability in blosc2schunkgetslicebuffer() in blosc/schunk.c that allows attackers…

CVE-2026-122330

Blosc c-blosc2 before 3.5.0 contains a divide-by-zero vulnerability in blosc2schunkgetslicebuffer() in blosc/schunk.c that allows attackers to crash applications by supplying crafted frames with unchecked zero chunksize or blocksize values. Attackers can provide a malicious Blosc2 frame opened via blosc2schunkopen() or blosc2schunkfrombuffer() and read as a slice, raising SIGFPE and terminating the process.

Assessment

CVSS: 6.8 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 5 November 2026
Last updated: 5 November 2026
Affected: Blosc · c-blosc2
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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