CVE-2008-3436

The GUP generic update process in Notepad++ before 4.8.1 does not properly verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a Trojan horse update, as demonstrated by evilgrade and DNS cache poisoning.

Published: 2008-08-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-3436 is rated Moderate Risk (57.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.84%). EPSS rose +1.19% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-3436

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.65% 1.84% +1.19%
2 2025-03-30 1.12% 0.65% -0.47%
3 2025-03-29 — 1.12% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-3436

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2008-3436

Affected software / configurations for CVE-2008-3436

Vendor Product Version Raw CPE
notepad\+\+ notepad\+\+ <= 1.0 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.3 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.4 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.5 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.6 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.7 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.8 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 1.9 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.3 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.4 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.5 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.6 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.8 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 2.9 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.0 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.3 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.4 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.5 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.6 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.7 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.8 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 3.9 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.0 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.0.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.1.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.1.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.2.1 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.2.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.3 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.4 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.5 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.6 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.7 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*
notepad\+\+ notepad\+\+ <= 4.7.2 cpe:2.3:a:notepad\+\+:notepad\+\+:*:*:*:*:*:*:*:*

References for CVE-2008-3436

cvelogic Threat Intelligence