How severe is CVE-2017-8803?

CVE-2017-8803 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-8803 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8803?

CVE-2017-8803 affects Mh-nexus Hex Editor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8803?

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

When was CVE-2017-8803 published?

CVE-2017-8803 was published on 2017-07-05 and last updated on 2026-06-17.

CVE-2017-8803

CVE-2017-8803 is a high-severity vulnerability in Mh-nexus Hex Editor with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Mh-nexus Hex Editor
Published: 2017-07-05
Last modified: 2026-06-17

Description

Notepad++ 7.3.3 (32-bit) with Hex Editor Plugin v0.9.5 might allow user-assisted attackers to execute code via a crafted file, because of a "Data from Faulting Address controls Code Flow" issue. One threat model is a victim who obtains an untrusted crafted file from a remote location and issues several user-defined commands.

Frequently asked questions

What is CVE-2017-8803?: Notepad++ 7.3.3 (32-bit) with Hex Editor Plugin v0.9.5 might allow user-assisted attackers to execute code via a crafted file, because of a "Data from Faulting Address controls Code Flow" issue. One threat model is a victim who obtains an untrusted crafted file from a remote location and issues several user-defined commands.
How severe is CVE-2017-8803?: CVE-2017-8803 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-8803 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8803?: CVE-2017-8803 affects Mh-nexus Hex Editor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8803?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-8803 published?: CVE-2017-8803 was published on 2017-07-05 and last updated on 2026-06-17.

References

https://github.com/wlinzi/security_advisories/tree/master/CVE-2017-8803

Affected products (1)

cpe:2.3:a:mh-nexus:hex_editor:0.9.5:*:*:*:*:*:*:*

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