CVE-2019-9893

CVE-2019-9893 is a critical-severity vulnerability in Libseccomp Project Libseccomp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

libseccomp before 2.4.0 did not correctly generate 64-bit syscall argument comparisons using the arithmetic operators (LT, GT, LE, GE), which might able to lead to bypassing seccomp filters and potential privilege escalations.

Frequently asked questions

What is CVE-2019-9893?
libseccomp before 2.4.0 did not correctly generate 64-bit syscall argument comparisons using the arithmetic operators (LT, GT, LE, GE), which might able to lead to bypassing seccomp filters and potential privilege escalations.
How severe is CVE-2019-9893?
CVE-2019-9893 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-9893 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9893?
CVE-2019-9893 affects Libseccomp Project Libseccomp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9893?
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-2019-9893 published?
CVE-2019-9893 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (1)