How severe is CVE-2007-1657?

CVE-2007-1657 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2007-1657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1657?

CVE-2007-1657 affects Python Software Foundation Python. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-1657 published?

CVE-2007-1657 was published on 2007-03-24 and last updated on 2026-06-16.

CVE-2007-1657

CVE-2007-1657 is a high-severity vulnerability in Python Software Foundation Python with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Python Software Foundation Python
Published: 2007-03-24
Last modified: 2026-06-16

Description

Stack-based buffer overflow in the file_compress function in minigzip (Modules/zlib) in Python 2.5 allows context-dependent attackers to execute arbitrary code via a long file argument.

Frequently asked questions

What is CVE-2007-1657?: Stack-based buffer overflow in the file_compress function in minigzip (Modules/zlib) in Python 2.5 allows context-dependent attackers to execute arbitrary code via a long file argument.
How severe is CVE-2007-1657?: CVE-2007-1657 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2007-1657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1657?: CVE-2007-1657 affects Python Software Foundation Python. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-1657 published?: CVE-2007-1657 was published on 2007-03-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:python_software_foundation:python:2.5:*:*:*:*:*:*:*

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