Notepad++ up to 8.9.6 COPYDATA_FULL_CMDLINE out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Notepad++ up to 8.9.6. This affects an unknown function. This manipulation of the argument COPYDATA_FULL_CMDLINE causes out-of-bounds. This vulnerability is tracked as CVE-2026-48770. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Notepad++ up to 8.9.6 and classified as problematic. Affected by this vulnerability is some unknown processing. The manipulation of the argument COPYDATA_FULL_CMDLINE with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-48770. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 8.9.6.1 eliminates this vulnerability. The upgrade is hosted for download at notepad-plus-plus.org. Applying the patch f20a0888a92ce557a339b833cd9d9d8e97dc797d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-39908). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Notepad++ 8.9.6.1
Patch: f20a0888a92ce557a339b833cd9d9d8e97dc797d

Timelineinfo

05/29/2026 Advisory disclosed
05/29/2026 +0 days VulDB entry created
06/27/2026 +29 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-r39g-3mcw-xcg2
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-48770 (🔒)
GCVE (CVE): GCVE-0-2026-48770
GCVE (VulDB): GCVE-100-367177
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/29/2026 13:11
Updated: 06/27/2026 23:32
Changes: 05/29/2026 13:11 (60), 06/27/2026 23:32 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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