How severe is CVE-2025-29476?

CVE-2025-29476 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-29476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-29476?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-29476 have an EU (EUVD) identifier?

Yes. CVE-2025-29476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9764.

When was CVE-2025-29476 published?

CVE-2025-29476 was published on 2025-04-04 and last updated on 2026-06-17.

CVE-2025-29476

CVE-2025-29476 is a medium-severity vulnerability with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-9764
Weakness: CWE-120
Published: 2025-04-04
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in compress_chunk_fuzzer with oss-fuzz on commit 16450518afddcb3139de627157208e49bfef6987 in c-blosc2 v.2.17.0 and before.

Frequently asked questions

What is CVE-2025-29476?: Buffer Overflow vulnerability in compress_chunk_fuzzer with oss-fuzz on commit 16450518afddcb3139de627157208e49bfef6987 in c-blosc2 v.2.17.0 and before.
How severe is CVE-2025-29476?: CVE-2025-29476 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-29476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-29476?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-29476 have an EU (EUVD) identifier?: Yes. CVE-2025-29476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9764.
When was CVE-2025-29476 published?: CVE-2025-29476 was published on 2025-04-04 and last updated on 2026-06-17.

References

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