CVE detail
CVE-2026-48770
Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WM_COPYDATA message to Notepad++ using the COPYDATA_FULL_CMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded NUL-terminated wchar_t* instead of enforcing COPYDATASTRUCT.cbData. This vulnerability is fixed in 8.9.6.1.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-r39g-3mcw-xcg2github.com
No excerpt available.
Exploitgithub.comJun 26, 2026, 9:16 PM No excerpt available.
Exploitgithub.comJun 26, 2026, 9:16 PMTwo arbitrary code execution vulnerabilities in Notepad++ let local attackers run commands of their choice on Windows machines by tampering with the editor’s XML configuration files, with both flaws rated High at CVSS 7.8. The flaws, tracked as CVE-2026-48778 and CVE-2026-48800, affect every version of the editor up to and including 8.9.6, Notepad++ said in […]
newswww.csoonline.comMay 29, 2026, 9:40 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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