# CVE-2019-14899: Other in VPN

> Adjacent attackers can hijack active VPN connections by injecting data into the TCP stream, affecting major operating systems.

- **Severity:** High 7.4 (`CVSS:3.0/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 11 Dec 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-rwr5-xr2c-7wc8, ROOT-OS-UBUNTU-2204-CVE-2019-14899, ROOT-OS-UBUNTU-2404-CVE-2019-14899, UBUNTU-CVE-2019-14899

## What is CVE-2019-14899?

CVE-2019-14899 is a high-severity vulnerability in Apple Ipados, published on 11 Dec 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was discovered in Linux, FreeBSD, OpenBSD, MacOS, iOS, and Android that allows a malicious access point, or an adjacent user, to determine if a connected user is using a VPN, make positive inferences about the websites they are visiting, and determine the correct sequence and acknowledgement numbers in use, allowing the bad actor to inject data into the TCP stream. This provides everything that is needed for an attacker to hijack active connections inside the VPN tunnel.

Weakness: CWE-300 (Channel Accessible by Non-Endpoint)

## Which versions are affected by CVE-2019-14899?

It affects 8 products.


Products: Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Macos, Apple Tvos, Freebsd Freebsd, Linux kernel, Openbsd Openbsd.

## How do I fix CVE-2019-14899?

Apply the vendor's patch.

## Is CVE-2019-14899 being exploited?

There is no known exploitation of CVE-2019-14899 in the wild and no public exploit code.

## Other vulnerabilities in Apple Ipados

- [CVE-2025-43300](https://insights.sbomify.com/CVE-2025-43300/): Apple iOS, iPadOS, and macOS Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24201](https://insights.sbomify.com/CVE-2025-24201/): Apple Multiple Products WebKit Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24085](https://insights.sbomify.com/CVE-2025-24085/): Apple Multiple Products Use-After-Free (critical 10.0, exploited in the wild)
- [CVE-2025-31200](https://insights.sbomify.com/CVE-2025-31200/): Apple Multiple Products Memory Corruption (critical 9.8, exploited in the wild)
- [CVE-2025-31201](https://insights.sbomify.com/CVE-2025-31201/): Apple Multiple Products Arbitrary Read and Write (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-14899 and fix it if it is affected.

What it is: CVE-2019-14899 is a high-severity vulnerability in Apple Ipados, published on 11 Dec 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-14899 in the wild and no public exploit code.

Affected product: Apple Ipados. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2019-14899/ (Markdown: https://insights.sbomify.com/CVE-2019-14899/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14899
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14899
- OSV: https://osv.dev/vulnerability/CVE-2019-14899

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-14899/
Summaries are generated and may contain mistakes; the official description above is the record.