CVE-2026-116844

What it is

Fclairamb ftpserverlib through 0.32.4 contains a cleartext transmission vulnerability because TransferOpen checks only the transferTLS flag set by PROT, not whether the prepared data connection uses TLS. When a client sends PROT P after PASV or PORT, file contents and directory listings cross the network unencrypted, even with mandatory encryption, letting on-path attackers read or modify them.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-10-27 00:10 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-10-27 01:19 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-10-29 11:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.1% in the next 30 days (EPSS).
• Severity: 6.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-10-27 01:19 UTC

Last modified

2026-10-29 11:17 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-319 · Cleartext transmission

Record status

Deferred

Attack profile CVSS 4.0 · 6.3

Attack vector

Network

Complexity

High

Attack requirements

Present

Privileges needed

None

User interaction

None

Confidentiality

Low

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-116844.md and follow it. Check whether this project is affected by CVE-2026-116844. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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