CVE-2025-14242: Vsftpd: vsftpd: denial of service via integer overflow in ls command parameter parsing

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-14 · updated 2026-06-30
Weakness: CWE-190

Description

A flaw was found in vsftpd. This vulnerability allows a denial of service (DoS) via an integer overflow in the ls command parameter parsing, triggered by a remote, authenticated attacker sending a crafted STAT command with a specific byte sequence.

Affected products

Red Hat Enterprise Linux 10: all versions — fixed in 0:3.0.5-10.el10_1.1
Red Hat Enterprise Linux 10.0 Extended Update Support: all versions — fixed in 0:3.0.5-9.el10_0.1
Red Hat Enterprise Linux 8: all versions — fixed in 0:3.0.3-36.el8_10.3
Red Hat Enterprise Linux 8.2 Advanced Update Support: all versions — fixed in 0:3.0.3-31.el8_2.1
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: all versions — fixed in 0:3.0.3-33.el8_4.1
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: all versions — fixed in 0:3.0.3-33.el8_4.1
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: all versions — fixed in 0:3.0.3-35.el8_6.1
Red Hat Enterprise Linux 8.6 Telecommunications Update Service: all versions — fixed in 0:3.0.3-35.el8_6.1
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions: all versions — fixed in 0:3.0.3-35.el8_6.1
Red Hat Enterprise Linux 8.8 Telecommunications Update Service: all versions — fixed in 0:3.0.3-35.el8_8.1
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: all versions — fixed in 0:3.0.3-35.el8_8.1
Red Hat Enterprise Linux 9: all versions — fixed in 0:3.0.5-6.el9_7.2
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions: all versions — fixed in 0:3.0.3-49.el9_0.1
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: all versions — fixed in 0:3.0.5-4.el9_2.1
Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:3.0.5-5.el9_4.1
Red Hat Enterprise Linux 9.6 Extended Update Support: all versions — fixed in 0:3.0.5-6.el9_6.1

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:3.0.5-10.el10_1.1; Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.0.5-9.el10_0.1; Red Hat Enterprise Linux 8 0:3.0.3-36.el8_10.3; Red Hat Enterprise Linux 8.2 Advanced Update Support 0:3.0.3-31.el8_2.1; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:3.0.3-33.el8_4.1; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:3.0.3-33.el8_4.1; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:3.0.3-35.el8_6.1; Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:3.0.3-35.el8_6.1; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:3.0.3-35.el8_6.1; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:3.0.3-35.el8_8.1; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:3.0.3-35.el8_8.1; Red Hat Enterprise Linux 9 0:3.0.5-6.el9_7.2. Check the vendor advisory for mitigations.

References

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