# CVE-2020-26164: Denial of service in n/a

> A remote attacker on the local network can cause a denial of service in KDE Connect by sending crafted packets that exhaust system resources.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2020-26164, GHSA-6f3v-3c9w-7rq7, MGASA-2020-0416, UBUNTU-CVE-2020-26164, openSUSE-SU-2020:1631-1, openSUSE-SU-2020:1647-1, openSUSE-SU-2020:1650-1, openSUSE-SU-2024:10890-1

## What is CVE-2020-26164?

CVE-2020-26164 is a medium-severity denial of service vulnerability in Opensuse Backports Sle, published on 7 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In kdeconnect-kde (aka KDE Connect) before 20.08.2, an attacker on the local network could send crafted packets that trigger use of large amounts of CPU, memory, or network connection slots, aka a Denial of Service attack.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2020-26164?

It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `kdeconnect-kde` | SUSE:Package Hub 15 SP1 | All versions | 1.3.3-bp151.4.3.1 |
| `kdeconnect-kde` | SUSE:Package Hub 15 SP2 | All versions | 20.04.2-bp152.2.3.1 |
| `kdeconnect-kde` | openSUSE:Leap 15.1 | All versions | 20.04.2-lp152.2.3.1 |
| `kdeconnect-kde` | openSUSE:Leap 15.2 | All versions | 20.04.2-lp152.2.3.1 |

Products: Kde Kdeconnect, Opensuse Backports Sle, Opensuse Leap.

## How do I fix CVE-2020-26164?

Upgrade to a fixed version.

## Is CVE-2020-26164 being exploited?

There is no known exploitation of CVE-2020-26164 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26164 and fix it if it is affected.

What it is: CVE-2020-26164 is a medium-severity denial of service vulnerability in Opensuse Backports Sle, published on 7 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-26164 in the wild and no public exploit code.

Affected product: Opensuse Backports Sle. 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-2020-26164/ (Markdown: https://insights.sbomify.com/CVE-2020-26164/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26164
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26164
- OSV: https://osv.dev/vulnerability/CVE-2020-26164

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-26164/
Summaries are generated and may contain mistakes; the official description above is the record.