# CVE-2020-1145: Windows GDI Information Disclosure Vulnerability

> An attacker with local access can exploit a Windows GDI memory handling flaw to disclose sensitive system information, potentially aiding further attacks.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 May 2020
- **Updated:** 19 Aug 2026
- **Also known as:** GHSA-7hhh-9v5f-7qv9

## What is CVE-2020-1145?

CVE-2020-1145 is a medium-severity vulnerability in Microsoft Windows 10, published on 21 May 2020. 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

An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface (GDI)  handles objects in memory, allowing an attacker to retrieve information from a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability.
To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.
The security update addresses the vulnerability by correcting how GDI handles memory addresses.

## Which versions are affected by CVE-2020-1145?

It affects 2 products.


Products: Microsoft Windows 10, Microsoft Windows Server 2016.

## How do I fix CVE-2020-1145?

No fix has been published for CVE-2020-1145 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-1145 being exploited?

There is no known exploitation of CVE-2020-1145 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 10

- [CVE-2015-2426](https://insights.sbomify.com/CVE-2015-2426/): Microsoft Windows Adobe Type Manager Library Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2015-1769](https://insights.sbomify.com/CVE-2015-1769/): Microsoft Windows Mount Manager Privilege Escalation (medium 6.6, exploited in the wild)
- [CVE-2020-1467](https://insights.sbomify.com/CVE-2020-1467/): Windows Hard Link Elevation of Privilege Vulnerability (critical 10.0)
- [CVE-2021-26424](https://insights.sbomify.com/CVE-2021-26424/): Windows TCP/IP Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2021-28476](https://insights.sbomify.com/CVE-2021-28476/): Windows Hyper-V Remote Code Execution Vulnerability (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1145 and fix it if it is affected.

What it is: CVE-2020-1145 is a medium-severity vulnerability in Microsoft Windows 10, published on 21 May 2020. 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-2020-1145 in the wild and no public exploit code.

Affected product: Microsoft Windows 10. 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-2020-1145/ (Markdown: https://insights.sbomify.com/CVE-2020-1145/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1145
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1145
- OSV: https://osv.dev/vulnerability/CVE-2020-1145

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-1145/
Summaries are generated and may contain mistakes; the official description above is the record.