CVE-2026-6539
4.6
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
Notepad++ 8.9.3 contains a format string injection vulnerability in the Find Results panel handler that allows attackers to cause denial of service and information disclosure by crafting a malicious nativeLang.xml language pack file. Attackers can distribute a poisoned language pack through community channels that triggers format string interpretation when a user performs search operations, leading to access violations and potential leakage of stack or register contents.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Notepad++ | Notepad++ | 0 < 8.9.4 | affected |
Weaknesses
- CWE-134: CWE-134 Use of Externally Controlled Format String
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://notepad-plus-plus.org/news/v894-released/
- https://www.vulncheck.com/advisories/notepad-format-string-injection-via-nativelang-xml
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