CVE-2015-3143

CVE-2015-3143 is a medium-severity vulnerability in Haxx Curl with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Description

cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.

Frequently asked questions

What is CVE-2015-3143?
cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.
How severe is CVE-2015-3143?
CVE-2015-3143 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-3143 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3143?
CVE-2015-3143 primarily affects Haxx Curl. In total, 155 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3143?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3143 published?
CVE-2015-3143 was published on 2015-04-24 and last updated on 2026-06-17.

References

Affected products (155)

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