CVE-2026-20841
Windows Notepad App Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Notepad App Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
- Record
CVE-2026-20841- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-77
- Updated
- 2026-11-02
EUVDEUVD-2026-7307
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
- Record
EUVD-2026-7307- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9w4f-2qq2-5rc9
Improper neutralization of special elements used in a command ('command injection') in Windows...
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code over a network.
- Record
GHSA-9w4f-2qq2-5rc9- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
NVD
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
- Record
CVE-2026-20841- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | hamzamalik3461/CVE-2026-20841 | 2024-09-22 |
| PoC in GitHub | BTtea/CVE-2026-20841-PoC | 2026-02-11 |
| PoC in GitHub | RajaUzairAbdullah/CVE-2026-20841 | 2026-02-11 |
| PoC in GitHub | tangent65536/CVE-2026-20841 | 2026-02-11 |
| PoC in GitHub | SecureWithUmer/CVE-2026-20841 | 2026-02-12 |
| PoC in GitHub | atiilla/CVE-2026-20841 | 2026-02-12 |
| PoC in GitHub | dogukankurnaz/CVE-2026-20841-PoC | 2026-02-12 |
| PoC in GitHub | hackfaiz/CVE-2026-20841-PoC | 2026-02-12 |
| PoC in GitHub | patchpoint/CVE-2026-20841 | 2026-02-12 |
| PoC in GitHub | uky007/CVE-2026-20841_notepad_analysis | 2026-02-12 |
Show 4 moreShow less
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | EleniChristopoulou/PoC-CVE-2026-20841 | 2026-02-17 |
| PoC in GitHub | 404godd/CVE-2026-20841-PoC | 2026-02-26 |
| PoC in GitHub | whiskeylab/notepad_CVE_2026_20841 | 2026-04-07 |
| PoC in GitHub | ashrafzaryouh/CVE-2026-20841 | 2026-06-01 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploits, facts | PoC in GitHub | |
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-20841 is a high vulnerability (CVSS 7.8) in Microsoft Windows Notepad, published February 10, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.88%, the 95th percentile. No source names a fixed version.