CVE-2009-0544

CVE-2009-0544 is a critical-severity vulnerability in Pycrypto Arc2 with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Description

Buffer overflow in the PyCrypto ARC2 module 2.0.1 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large ARC2 key length.

Frequently asked questions

What is CVE-2009-0544?
Buffer overflow in the PyCrypto ARC2 module 2.0.1 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large ARC2 key length.
How severe is CVE-2009-0544?
CVE-2009-0544 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-0544 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0544?
CVE-2009-0544 affects Pycrypto Arc2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-0544?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-0544 published?
CVE-2009-0544 was published on 2009-02-12 and last updated on 2026-06-16.

References

Affected products (1)

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