CVE-2012-6139

CVE-2012-6139 is a medium-severity vulnerability in Xmlsoft Libxslt with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

libxslt before 1.1.28 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an (1) empty match attribute in a XSL key to the xsltAddKey function in keys.c or (2) uninitialized variable to the xsltDocumentFunction function in functions.c.

Frequently asked questions

What is CVE-2012-6139?
libxslt before 1.1.28 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an (1) empty match attribute in a XSL key to the xsltAddKey function in keys.c or (2) uninitialized variable to the xsltDocumentFunction function in functions.c.
How severe is CVE-2012-6139?
CVE-2012-6139 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-6139 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6139?
CVE-2012-6139 primarily affects Xmlsoft Libxslt. In total, 81 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6139?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6139 published?
CVE-2012-6139 was published on 2013-04-12 and last updated on 2026-06-16.

References

Affected products (81)

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