Is CVE-2026-9669 in the CISA KEV catalog?

No. CVE-2026-9669 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-9669?

CVE-2026-9669 has an EPSS score of 0.38% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-9669?

No published fix for CVE-2026-9669 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-9669

UNSCORED

NVD

Description

bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.

CWE-121Stack-based Buffer Overflow

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.38%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Other references8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-23.