Is CVE-2013-7040 being actively exploited?

CVE-2013-7040 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-7040?

CVE-2013-7040 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2013-7040

MEDIUM · CVSS 4.3EPSS 3.1%EU EUVD

Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-310
EPSS score: 3.1% (88th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-6840)
Published: May 19, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-6840 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

apple / mac os x
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Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived
Apple Mac OS X v10.3.6 and Apple Mac OS X Server V10.3.6 - Apple Inc. - Common Criteria CCEVS-VR-0086-2005 - archived

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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