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CVE-2026-90141

7.3 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix integer overflow in ftp helper port/address parsing ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16…

Published Sep 17, 2026EPSS 0.45%

Overview

CVE-2026-90141 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ipvs: fix integer overflow in ftp helper port/address parsing

ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16

(hport) and into unsigned char (p[]) without checking for overflow.

A crafted FTP PASV/EPSV response with an over-long port or address

octet wraps the value, so the helper configures the data connection

with a truncated port/address.

The netfilter conntrack FTP helper had the same defect, fixed in

commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16

overflows"). Apply the equivalent fix here: widen the port accumulator

to u32 and reject values above 65535, and reject address octets above

255.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/00bcc6d679262ea42688fba1d7819ea6e56f12efRefgit.kernel.org/stable/c/4aed450adaee3a021db27be94c61fe025b0d05ffRefgit.kernel.org/stable/c/50cb9b7263a2ed01f7d2f97818a800c2ee05f661Refgit.kernel.org/stable/c/b1908bff0faaa94d55be72da65879cad632e8236Refgit.kernel.org/stable/c/d02de9a7a7e2484da0cf37e50614840623b98a62Refgit.kernel.org/stable/c/deaa88fa010ba0dfc554d09e006ddd1ce9945c82Refgit.kernel.org/stable/c/e625a9477d12baaff4025c5f9989184a907ea8fcRefgit.kernel.org/stable/c/fc1493c905d7e0bc8830c1d83915cb7831daf1a1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90141?

CVE-2026-90141 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-90141?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-90141?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-90141?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90141 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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