How severe is CVE-2014-9456?

CVE-2014-9456 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2014-9456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-9456?

CVE-2014-9456 affects Don Ho Notepad++. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-9456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2014-9456 published?

CVE-2014-9456 was published on 2015-01-02 and last updated on 2026-06-17.

CVE-2014-9456

CVE-2014-9456 is a critical-severity vulnerability in Don Ho Notepad++ with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Don Ho Notepad++
Published: 2015-01-02
Last modified: 2026-06-17

Description

Buffer overflow in NotePad++ 6.6.9 allows remote attackers to have unspecified impact via a long Time attribute in an Event element in an XML file. NOTE: this issue was originally incorrectly mapped to CVE-2014-1004; see CVE-2014-1004 for more information.

Frequently asked questions

What is CVE-2014-9456?: Buffer overflow in NotePad++ 6.6.9 allows remote attackers to have unspecified impact via a long Time attribute in an Event element in an XML file. NOTE: this issue was originally incorrectly mapped to CVE-2014-1004; see CVE-2014-1004 for more information.
How severe is CVE-2014-9456?: CVE-2014-9456 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2014-9456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-9456?: CVE-2014-9456 affects Don Ho Notepad++. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-9456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2014-9456 published?: CVE-2014-9456 was published on 2015-01-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:don_ho:notepad\+\+:6.6.9:*:*:*:*:*:*:*

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