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15 vulnerabilities by notepad-plus-plus
CVE-2026-6539 (GCVE-0-2026-6539)
Vulnerability from cvelistv5 – Published: 2026-04-30 20:31 – Updated: 2026-05-01 14:21
VLAI
Title
Notepad++ 8.9.3 Format String Injection via nativeLang.xml
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.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-134 - Use of Externally Controlled Format String
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://notepad-plus-plus.org/news/v894-released/ | patch |
| https://www.vulncheck.com/advisories/notepad-form… | third-party-advisory |
Impacted products
Credits
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CVE-2026-5525 (GCVE-0-2026-5525)
Vulnerability from cvelistv5 – Published: 2026-04-10 07:40 – Updated: 2026-04-10 12:49
VLAI
Title
Stack-Based Buffer Overflow in Notepad++ File Drop Handler leads to DoS
Summary
A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).
Severity
6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Notepad++ Project | Notepad++ |
Affected:
8.9.3
Unaffected: 8.9.4 |
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CVE-2026-25926 (GCVE-0-2026-25926)
Vulnerability from cvelistv5 – Published: 2026-02-18 23:07 – Updated: 2026-02-19 17:45
VLAI
Title
Notepad++ has an Untrusted Search Path
Summary
Notepad++ is a free and open-source source code editor. An Unsafe Search Path vulnerability (CWE-426) exists in versions prior to 8.9.2 when launching Windows Explorer without an absolute executable path. This may allow execution of a malicious explorer.exe if an attacker can control the process working directory. Under certain conditions, this could lead to arbitrary code execution in the context of the running application. Version 8.9.2 patches the issue.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_CONFIRM |
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_MISC |
| https://notepad-plus-plus.org/news/v892-released | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
< 8.9.2
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CVE-2025-15556 (GCVE-0-2025-15556)
Vulnerability from cvelistv5 – Published: 2026-02-03 00:50 – Updated: 2026-03-05 01:29 X_Known Exploited VulnerabilityTitle
Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Verification
Summary
Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download and execute an attacker-controlled installer, resulting in arbitrary code execution with the privileges of the user.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-494 - Download of Code Without Integrity Check
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://community.notepad-plus-plus.org/topic/272… | release-notespatch |
| https://notepad-plus-plus.org/news/hijacked-incid… | vendor-advisory |
| https://github.com/notepad-plus-plus/notepad-plus… | patch |
| https://github.com/notepad-plus-plus/wingup/commi… | patch |
| https://www.vulncheck.com/advisories/notepad-plus… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
| https://notepad-plus-plus.org//news//clarificatio… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
0 , < 8.8.9
(semver)
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CVE-2025-49144 (GCVE-0-2025-49144)
Vulnerability from cvelistv5 – Published: 2025-06-23 19:01 – Updated: 2026-02-26 17:50
VLAI
Title
Notepad++ Privilege Escalation in Installer via Uncontrolled Executable Search Path
Summary
Notepad++ is a free and open-source source code editor. In versions 8.8.1 and prior, a privilege escalation vulnerability exists in the Notepad++ v8.8.1 installer that allows unprivileged users to gain SYSTEM-level privileges through insecure executable search paths. An attacker could use social engineering or clickjacking to trick users into downloading both the legitimate installer and a malicious executable to the same directory (typically Downloads folder - which is known as Vulnerable directory). Upon running the installer, the attack executes automatically with SYSTEM privileges. This issue has been fixed and will be released in version 8.8.2.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
< 8.8.2
|
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CVE-2023-6401 (GCVE-0-2023-6401)
Vulnerability from cvelistv5 – Published: 2023-11-30 14:31 – Updated: 2024-08-02 08:28
VLAI
Title
NotePad++ dbghelp.exe uncontrolled search path
Summary
A vulnerability classified as problematic was found in NotePad++ up to 8.1. Affected by this vulnerability is an unknown functionality of the file dbghelp.exe. The manipulation leads to uncontrolled search path. An attack has to be approached locally. The identifier VDB-246421 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.3 (Medium)
5.3 (Medium)
CWE
- CWE-427 - Uncontrolled Search Path
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.246421 | vdb-entry |
| https://vuldb.com/?ctiid.246421 | signaturepermissions-required |
Credits
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CVE-2023-47452 (GCVE-0-2023-47452)
Vulnerability from cvelistv5 – Published: 2023-11-30 00:00 – Updated: 2024-08-02 21:09
VLAI
Summary
An Untrusted search path vulnerability in notepad++ 6.5 allows local users to gain escalated privileges through the msimg32.dll file in the current working directory.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-40166 (GCVE-0-2023-40166)
Vulnerability from cvelistv5 – Published: 2023-08-25 20:20 – Updated: 2024-10-02 14:50
VLAI
Title
Notepad++ heap buffer read overflow in FileManager::detectLanguageFromTextBegining
Summary
Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer read overflow in `FileManager::detectLanguageFromTextBegining `. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://securitylab.github.com/advisories/GHSL-20… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
<= 8.5.6
|
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CVE-2023-40164 (GCVE-0-2023-40164)
Vulnerability from cvelistv5 – Published: 2023-08-25 20:12 – Updated: 2024-10-02 14:52
VLAI
Title
Notepad++ global buffer read overflow in nsCodingStateMachine::NextState
Summary
Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to global buffer read overflow in `nsCodingStateMachine::NextStater`. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://securitylab.github.com/advisories/GHSL-20… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
<= 8.5.6
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CVE-2023-40036 (GCVE-0-2023-40036)
Vulnerability from cvelistv5 – Published: 2023-08-25 19:58 – Updated: 2024-10-01 16:03
VLAI
Title
Notepad++ global buffer read overflow in CharDistributionAnalysis::HandleOneChar
Summary
Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to global buffer read overflow in `CharDistributionAnalysis::HandleOneChar`. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
| URL | Tags |
|---|---|
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Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
<= 8.5.6
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CVE-2023-40031 (GCVE-0-2023-40031)
Vulnerability from cvelistv5 – Published: 2023-08-25 19:49 – Updated: 2024-10-02 14:53
VLAI
Title
Notepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convert
Summary
Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer write overflow in `Utf8_16_Read::convert`. This issue may lead to arbitrary code execution. As of time of publication, no known patches are available in existing versions of Notepad++.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://securitylab.github.com/advisories/GHSL-20… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
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| notepad-plus-plus | notepad-plus-plus |
Affected:
<= 8.5.6
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CVE-2022-31902 (GCVE-0-2022-31902)
Vulnerability from cvelistv5 – Published: 2023-02-01 00:00 – Updated: 2025-03-27 16:25
VLAI
Summary
Notepad++ v8.4.1 was discovered to contain a stack overflow via the component Finder::add().
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-787 - Out-of-bounds Write
Assigner
References
2 references
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CVE-2022-31901 (GCVE-0-2022-31901)
Vulnerability from cvelistv5 – Published: 2023-01-19 00:00 – Updated: 2025-04-04 14:07
VLAI
Summary
Buffer overflow in function Notepad_plus::addHotSpot in Notepad++ v8.4.3 and earlier allows attackers to crash the application via two crafted files.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
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CVE-2022-32168 (GCVE-0-2022-32168)
Vulnerability from cvelistv5 – Published: 2022-09-28 09:00 – Updated: 2025-05-21 14:14
VLAI
Title
notepad-plus-plus - DLL Hijacking
Summary
Notepad++ versions 8.4.1 and before are vulnerable to DLL hijacking where an attacker can replace the vulnerable dll (UxTheme.dll) with his own dll and run arbitrary code in the context of Notepad++.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.mend.io/vulnerability-database/CVE-20… | x_refsource_MISC |
| https://github.com/notepad-plus-plus/notepad-plus… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus |
Affected:
v8.3 , < unspecified
(custom)
Affected: unspecified , ≤ v8.4.4 (custom) |
Date Public
2022-09-21 00:00
Credits
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CVE-2019-16294 (GCVE-0-2019-16294)
Vulnerability from cvelistv5 – Published: 2019-09-14 15:39 – Updated: 2024-08-05 01:10
VLAI
Summary
SciLexer.dll in Scintilla in Notepad++ (x64) before 7.7 allows remote code execution or denial of service via Unicode characters in a crafted .ml file.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://notepad-plus-plus.org/download/v7.7.html | x_refsource_MISC |
| https://www.scintilla.org/ScintillaHistory.html | x_refsource_MISC |
| https://github.com/bi7s/CVE/tree/master/CVE-2019-16294 | x_refsource_MISC |
| http://packetstormsecurity.com/files/154706/Notep… | x_refsource_MISC |
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