# CVE-2020-26146: Information disclosure in n/a

> Attackers can exfiltrate selected fragments from WPA/WPA2/WPA3 implementations by abusing non-consecutive packet number reassembly in Android devices.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 11 May 2021
- **Updated:** 2 Jun 2026
- **Also known as:** 2860242, 2874369, A-175626808, ASB-A-175626808, GHSA-pwgj-jw9h-pg74, ROOT-OS-UBUNTU-2204-CVE-2020-26146, UBUNTU-CVE-2020-26146

## What is CVE-2020-26146?

CVE-2020-26146 is a medium-severity vulnerability in Siemens Scalance W1750d Firmware, published on 11 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-26146?

It affects 19 products.


Products: Arista C-100 Firmware, Arista C-110 Firmware, Arista C-120 Firmware, Arista C-130 Firmware, Arista C-200 Firmware, Arista C-230 Firmware, Arista C-235 Firmware, Arista C-250 Firmware, Arista C-260 Firmware, Arista C-65 Firmware, Arista C-75 Firmware, Arista O-105 Firmware, Arista O-90 Firmware, Arista W-118 Firmware, Arista W-68 Firmware, Samsung Galaxy I9305 Firmware, Siemens Scalance W1700 Ieee 802.11ac Firmware, Siemens Scalance W1750d Firmware, Siemens Scalance W700 Ieee 802.11n Firmware.

## How do I fix CVE-2020-26146?

Apply the vendor's patch.

## Is CVE-2020-26146 being exploited?

There is no known exploitation of CVE-2020-26146 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Scalance W1750d Firmware

- [CVE-2020-26144](https://insights.sbomify.com/CVE-2020-26144/): Other in n/a (medium 6.5)
- [CVE-2020-26139](https://insights.sbomify.com/CVE-2020-26139/): Missing authorization in n/a (medium 5.3)
- [CVE-2020-24588](https://insights.sbomify.com/CVE-2020-24588/): The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the (low 3.5)
- [CVE-2020-24587](https://insights.sbomify.com/CVE-2020-24587/): The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all (low 2.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26146 and fix it if it is affected.

What it is: CVE-2020-26146 is a medium-severity vulnerability in Siemens Scalance W1750d Firmware, published on 11 May 2021. 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-2020-26146 in the wild and no public exploit code.

Affected product: Siemens Scalance W1750d Firmware. 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-2020-26146/ (Markdown: https://insights.sbomify.com/CVE-2020-26146/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26146
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26146
- OSV: https://osv.dev/vulnerability/CVE-2020-26146

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-26146/
Summaries are generated and may contain mistakes; the official description above is the record.